Bluetooth Body Fat Scale is a smart electronic bathroom scale with body composition analysis, Bluetooth synchronization, and smartphone control. It supports analysis of up to 13 body metrics and memory for 8 users.

FAQ on Using the Bluetooth Body Fat Scale — Smart Diagnostic Scales

Smart Bluetooth bathroom scale: construction and power supply

The platform is tempered glass; the housing is plastic. A Bluetooth module is integrated for connection to a smartphone. Power depends on the modification: most often 2xAAA (occasionally 3xAAA); versions with a built-in rechargeable battery and USB charging also exist. The power type is indicated on the rating label of the device and/or in the manual.

Compatibility and management application

The scale works with iOS and Android smartphones via the OKOK International application. Synchronization with other ecosystems (Apple Health, Samsung Health, Huawei Health, Google Fit, Garmin, etc.) is not supported.

Can it be used without a phone

Yes. Without the app, the display shows only body weight; extended indicators are available in the application.

Which parameters are measured

In addition to weight, the app displays bioimpedance-based calculated metrics: % fat, water, muscle and bone mass, BMI, basal metabolic rate (BMR), visceral fat, “biological age,” and others. The scale’s display shows the weight and service indicators.

How bioimpedance (BIA) works

A weak current passes through the electrodes in the platform, tissue resistance is measured, and the application calculates body composition considering the entered data (height, sex, age). For correct measurements, stand barefoot with dry feet, covering both electrodes with each foot.

Safety in analysis modes

Use BIA only in the absence of medical contraindications. If you have implanted electronic devices, are pregnant, or are unsure—use the scale as a conventional one (weight only) and do not activate body composition analysis.

Accuracy and operating conditions

For a number of modifications, resolution/measurement error is specified as 50 g. For stable readings, place the scale on a hard, flat surface (tile/laminate), not on a carpet; do not move the device between weighings; stand still until the result is fixed. Low battery charge and uneven flooring lead to scattered readings.

Maximum load

Depends on the model: up to 150–180 kg. The overload indicator is displayed in case of excess load.

Minimum measurable weight

The minimum threshold depends on the modification and may differ (values from ~0.1 to 2 kg occur). The scale is intended primarily for measuring human body mass; objects and animals can be weighed if their mass exceeds the trigger threshold.

Platform dimensions and “large foot”

A typical platform size is 26x26 cm. If your foot is larger than the platform, this does not impede weighing—distribute your weight at the center.

Indicators and display

LED display with backlight. “LO” means low battery charge. On some modifications an ambient temperature value is shown in a corner—this is an auxiliary function.

Unit switching

A button on the underside of the housing switches kg/pounds (lb). On some modifications, a restart/brief Bluetooth disablement may be required to retain the units on the display.

Multi-user mode

Memory for up to 8 users in the application. Profiles are created in OKOK International; each participant’s data is stored separately.

Bluetooth pairing: basic procedure

Install OKOK International, enable Bluetooth and the required permissions, create a profile, step on the scale (to activate it), then add the device in the application. During initial setup, it is more convenient to keep the phone screen open on the “Device search” step.

Calibration and restoration of correct readings

Place the scale on a hard, flat surface, wait for “0.0,” step on and off, then weigh yourself again. In case of severe desynchronization, remove the batteries for 10–15 minutes and reinstall them. Some versions have a reset/“CAL” button on the underside—follow the instructions for your modification.

The screen does not light up or the scale turns off quickly

Check polarity and replace the batteries with new ones; remove any shipping films from the sensors; press the button on the back. If there is no indication, a malfunction is possible.

Voice guidance

Voice prompts are not provided.

Care and operation

Use in a dry room at room temperature, prevent moisture on the electrodes, wipe with a soft dry cloth. Do not jump on the platform; do not overload the device; store and use on a flat surface.

Materials and glass thickness

The platform is made of tempered glass; the exact thickness may vary depending on batch/model and is not regulated by a single value.

Modification types and external differences

The functionality of color variants is generally identical; versions “without a display” (with alternative indication) and versions with different patterns/markings on the panel may occur; this does not affect measurements.

How to power on the Bluetooth Body Fat Scale after installing the batteries

After installing the batteries, the scale activates automatically when you press on the platform with your foot. There is no separate power button. If no indication appears, check the batteries and their polarity.

How to reconnect the Bluetooth Body Fat Scale to a smartphone

If the device is not displayed in the application, remove it from the phone’s Bluetooth device list, restart Bluetooth, open OKOK International and search again, stepping on the platform to activate it. If necessary, reset the scale.

Why the Bluetooth Body Fat Scale does not connect to the phone

Ensure that Bluetooth is enabled and that location permissions are granted (Android). The scale must be active (you need to stand on it). If this does not help, close and reopen the app, update it, or reinstall it.

How to update user data in the OKOK application

You can change age, height, sex, and name in the app profile. After changes, the data are recalculated automatically at the next weighing.

Can multiple users share one phone with the Bluetooth Body Fat Scale

Yes. Separate profiles are created in OKOK. After weighing, the data are automatically assigned to the profile most similar in weight and sex.

How to interpret body composition indicators in the app

Each parameter is accompanied by an explanation in the app. The values are based on computational formulas and are not a medical diagnosis. Use them for tracking dynamics rather than for diagnosis.

How often to weigh on the Bluetooth Body Fat Scale

There are no restrictions on usage frequency. For objective dynamics, it is recommended to take measurements at the same time of day, on an empty stomach, and under consistent conditions.

Can the Bluetooth Body Fat Scale be used on a carpet

No. Carpet, soft linoleum, or rubber coverings distort results. Install the scale on a hard, flat surface.

Why the Bluetooth Body Fat Scale shows different weight values consecutively

Reasons include uneven flooring, wet feet, residual charge on electrodes, or movement during measurement. For accurate results, stand still, keep feet dry, and wait until readings are fixed on the screen.

Can the Bluetooth Body Fat Scale be turned on without the app

Yes. The scale turns on automatically when the platform is pressed. The app is required only for data transfer and display of calculated metrics.

How long do the batteries last in the Bluetooth Body Fat Scale

The average service life is several months with regular use. Duration depends on weighing frequency and battery quality. When “LO” appears, replace batteries with new alkaline ones.

Can rechargeable batteries be used

Ni-MH AAA rechargeable cells are permitted, but due to lower voltage (1.2 V) activation errors or premature low-charge messages are possible. Alkaline batteries are preferable.

Why the Bluetooth Body Fat Scale shows “Err” or “Error”

This message indicates overload, incorrect positioning, or lack of stable contact. Remove the load, wait for reset to “0.0,” and repeat the measurement.

Can objects or animals be weighed

Yes, if the mass exceeds the activation threshold (typically 0.1–2 kg). For animals, use the difference method—first weigh yourself with the pet, then without.

What the Bluetooth symbol on the display means

A flashing symbol indicates active search or data transfer. After successful connection it remains steady or turns off—depending on the firmware version.

Can the display backlight be turned off

No, the brightness level is fixed and not user-adjustable.

How to store the Bluetooth Body Fat Scale

Store in a dry room at +5 to +40 °C, away from moisture and direct sunlight. Do not store under furniture and avoid stepping on it while wearing shoes.

Operating temperature range

The recommended operating range is +10 to +40 °C. At low temperatures, deviations are possible due to condensation and slower sensor response.

Can the Bluetooth Body Fat Scale be used in a bathroom

No. High humidity can lead to contact oxidation and measurement errors. Use only on a dry floor.

How to clean the Bluetooth Body Fat Scale platform

Wipe with a soft dry or slightly damp cloth without abrasives. Do not use detergents containing alcohol or acids. Do not immerse the device in water.

Why the Bluetooth Body Fat Scale does not display body composition data

If only weight is recorded in the app, ensure you are standing barefoot with dry feet fully contacting the electrodes. Also verify that correct height, sex, and age are entered in the profile—without these, bioimpedance calculations are impossible.

Can the Bluetooth Body Fat Scale be used by children

The scale is suitable for determining body mass in children, but bioimpedance analysis is accurate only for adults. For users under 18, the app may display a limited set of indicators.

Can pregnant users use the Bluetooth Body Fat Scale

It is recommended to use the weighing function only. Bioimpedance analysis (BIA) is contraindicated during pregnancy due to a weak electric current passing through the body.

What to do if the Bluetooth Body Fat Scale shows incorrect weight

Check installation on a flat, hard surface; ensure the sensors are clean and no foreign objects are under the platform. If necessary, perform calibration: wait for “0.0,” step on and off, then repeat the measurement.

Can the Bluetooth Body Fat Scale be used with implants or a pacemaker

No. Using the bioimpedance function is unsafe for people with electronic implants. Weighing without activating BIA is possible if the electrodes are not contacted.

How to know that the Bluetooth Body Fat Scale is properly calibrated

After powering on, the scale should show “0.0.” If other digits are displayed without load, remove the batteries for 10–15 minutes and recalibrate on a flat surface.

Can you weigh while wearing socks

For correct body composition analysis—no, you must stand barefoot. For measuring weight only, thin socks are acceptable, but electrode contact will be impaired.

Why the Bluetooth Body Fat Scale shows different fat values at the same weight

Bioimpedance depends on body hydration and skin temperature. Differences are normal when the time of day or physical condition changes. For stable results, weigh at the same time, in the morning, on an empty stomach.

How to power on the Bluetooth Body Fat Scale after replacing the batteries

Install the batteries according to polarity, place the scale on a flat surface, and lightly press the platform. After “0.0” appears, the device is ready for operation.

Can the Bluetooth Body Fat Scale be used on heated floors

Yes, provided the surface is dry and does not exceed +40 °C. Overheating can affect sensor accuracy; therefore, prolonged storage on a heated area is not recommended.

Can the Bluetooth Body Fat Scale be used outdoors

Not recommended. The device is intended for indoor operation at +10 to +40 °C without direct exposure to moisture or dust.

How long are data stored in the OKOK app

Measurement history is stored in the user profile without limitation when an account is present. After deleting the app, data can be restored upon re-login.

Can data be exported from the app

Yes, a report export function is available in the statistics section. Export options depend on the version of OKOK International and the smartphone operating system.

Can the Bluetooth Body Fat Scale sync with other health apps

No, only the OKOK International app is supported. Integration with Apple Health, Google Fit, or Samsung Health is not provided.

How to reset the Bluetooth Body Fat Scale to factory settings

Remove the batteries for 10–15 minutes, reinstall them, and wait for “0.0.” Some versions have a hidden Reset button on the bottom panel. After resetting, you will need to reconnect to the phone.

What it means if the Bluetooth Body Fat Scale turns off quickly

The auto-off function is triggered during inactivity to save energy. If the device turns off during weighing, check the batteries and the stability of foot contact with the electrodes.

Can units be changed via the app

No. The kg/pound switch is performed with the button on the underside of the scale. The app displays data in the units set on the device.

How to determine the firmware version of the Bluetooth Body Fat Scale

The version information is displayed in the app settings after the device is connected. In some versions it is shown in the “About device” section or on the label under the battery compartment.

Can the firmware of the Bluetooth Body Fat Scale be updated

No. The scale does not support user firmware updates. All functions are implemented at the factory level.

How long the Bluetooth Body Fat Scale holds the reading on the display

The result is shown on the screen for several seconds, after which the scale turns off automatically. The hold time is not adjustable and depends on the device version.

Why the OKOK app does not find the Bluetooth Body Fat Scale

The reason may be lack of permissions for Bluetooth or location, an outdated app version, or the scale not being activated. To connect, step on the platform, wait for the screen to light up, and only then start device search in the app.

Can the Bluetooth Body Fat Scale be connected to multiple phones

Yes, but sequentially. The scale transmits data to only one active connection at a time. To link to a second device, disable Bluetooth on the first phone and perform pairing again.

What to do if the Bluetooth Body Fat Scale loses connection during weighing

Check battery charge level, the distance to the phone, and the absence of interference from other Bluetooth devices. If the connection is unstable, keep the smartphone within 1 meter of the scale during measurement.

Can the Bluetooth Body Fat Scale be used without registration in the app

Yes, registration is not required for simple weighing. However, without creating a profile, body composition data are neither stored nor shown in the measurement history.

Can the device be renamed in the app

Yes. In the “My devices” section, you can set a custom name for convenience, e.g., “Bedroom scale.” This does not affect operation.

How the auto-off function works in the Bluetooth Body Fat Scale

The scale turns off automatically 10–20 seconds after measurement completion or when there is no load on the platform. This is normal energy-saving behavior.

Can the Bluetooth Body Fat Scale be kept permanently on

No. The device has no continuous-operation mode. After each measurement, it turns off automatically to prolong battery life.

How to determine that the Bluetooth Body Fat Scale is functioning properly

If the scale powers on, shows a stable “0.0,” displays weight correctly, and synchronizes with the app, the device is operating normally. Significant discrepancies or lack of indication indicate the need to replace batteries or to perform diagnostics.

How to measure a child’s weight using the Bluetooth Body Fat Scale

For infants and small children, use the difference method: first weigh yourself while holding the child, then weigh yourself without the child—the difference equals the child’s mass. Direct bioimpedance analysis is not applied to children.

Can the Bluetooth Body Fat Scale be used while wearing shoes

No. For correct body composition analysis you must stand barefoot. Shoes and socks prevent the signal from passing between electrodes.

Can two people weigh themselves simultaneously

No. The scale is designed to distribute the load of a single user. Joint weighing will lead to measurement errors and a risk of sensor damage.

Why the Bluetooth Body Fat Scale displays weight with a delay

Weight measurement begins only after pressure on the platform stabilizes. If the user moves, the algorithm waits for stillness to fix the result; therefore, readings may appear with a delay of several seconds.

Can the Bluetooth Body Fat Scale be used on an uneven floor

No. An uneven surface leads to sensor skew and weighing errors. Place the device on a flat area of the floor or use a rigid board.

How to store the Bluetooth Body Fat Scale during long periods of non-use

Remove the batteries, clean the surface, and store the device in a dry place at +5 to +40 °C. Avoid direct sunlight and humidity fluctuations.

Can the Bluetooth Body Fat Scale be used with wet feet

No. Moisture and wet feet distort bioimpedance and may cause measurement errors. Dry your feet before use.

Can the Bluetooth Body Fat Scale be used at temperatures below 0 °C

No. At sub-zero temperatures, electronics and sensors may operate unstably. The device is intended for indoor use at +10 to +40 °C.

What to do if the Bluetooth Body Fat Scale screen is dim

Check the batteries—they are likely discharged. If replacement does not help, clean the contacts in the compartment and ensure correct installation of the cells.

Can the Bluetooth Body Fat Scale be used on bathroom tiles

Yes, if the surface is dry and even. Prevent water from reaching the sensors and the housing.

Why the Bluetooth Body Fat Scale does not respond when pressed

Check the batteries, remove shipping stickers from the feet, and make sure the device is placed on a flat surface. If the screen still does not turn on, a battery replacement may be required.

Can people with flat feet use the Bluetooth Body Fat Scale

Yes. The platform design provides correct readings for any arch type, provided the feet fully contact the electrodes and are centered.

How ambient humidity affects operation of the Bluetooth Body Fat Scale

Elevated humidity can cause condensation on electrodes and lead to measurement errors. Use the device only in dry rooms and do not store it in a bathroom.

Why the Bluetooth Body Fat Scale shows different values on repeated weighing

Small deviations within 0.1–0.3 kg are normal and are related to sensor characteristics. Larger deviations indicate an uneven surface, poor foot contact, or the need for recalibration.

Can a protective mat be used under the Bluetooth Body Fat Scale

Not recommended. A soft base distorts pressure on the sensors. If floor protection is required, use a thin, rigid plastic or wooden pad.

What is the Bluetooth range of the Bluetooth Body Fat Scale

Typically up to 5–10 meters with line of sight. For a stable connection during measurement, keep the smartphone close to the scale.

How to turn off the Bluetooth Body Fat Scale manually

There is no manual power switch. The device turns off automatically after the weighing is completed or after 20 seconds of inactivity.

How often calibration is required for the Bluetooth Body Fat Scale

Routine calibration is not needed. Perform it only in case of noticeable weight deviations or after transporting the device.

Why the Bluetooth Body Fat Scale shows “0.L” or “OL”

This message indicates that the permissible load has been exceeded. Step off the platform immediately to avoid sensor damage.

Can the Bluetooth Body Fat Scale be used with underfloor heating

Yes, provided the surface temperature does not exceed +40 °C and there is no moisture. Avoid installation on hot spots where overheating of the housing is possible.

Why the Bluetooth Body Fat Scale quickly drains batteries

Possible causes include frequent activations without use, low-quality batteries, or storage in high humidity. Use new alkaline batteries and remove them during long breaks.

Can you weigh yourself if your skin is damp after a shower

No. Moisture degrades electrode contact and can lead to incorrect bioimpedance data. It is recommended to wait 10–15 minutes after a shower before measurement.

Why the Bluetooth Body Fat Scale shows different values after being moved

Each surface has a different hardness and levelness, which affects sensor calibration. For reliable results, always use the scale in the same location.

Can the display backlight be enabled manually

No. The backlight is activated automatically during weighing and turns off with the screen after measurement ends.

Why the Bluetooth Body Fat Scale does not respond to a light touch

The device is activated by a load of at least several kilograms. To power on, stand on the platform with both feet rather than touching it with a hand or finger.

Can luggage or other items be weighed while being held

Yes, provided the item’s mass does not exceed the maximum load. Use the difference method: weigh yourself with the item, then without it.

How to clean the electrode pads of the Bluetooth Body Fat Scale

Wipe them with a soft cloth slightly moistened with water. Do not use alcohol, acetone, or abrasive agents to avoid damaging the contact coating.

Can the Bluetooth Body Fat Scale be used in low light

Yes. The LED display brightness is sufficient for reading data even in a dark room.

How to know when the Bluetooth Body Fat Scale has finished measuring

When the data stabilize, the blinking indication stops and the final weight appears on the screen. You may step off the platform after that—the data will be saved automatically.

Can the Bluetooth Body Fat Scale be used on wet tiles

No. Even a small amount of moisture reduces measurement accuracy and may cause slipping. Use the device only on a dry surface.

Why the Bluetooth Body Fat Scale shows the same weight for different people

Weight is measured independently of the user profile, so values may coincide. Differences in body composition are displayed only in the app after synchronization and bioimpedance analysis.

Can the Bluetooth Body Fat Scale be used for medical purposes

No. The device is intended for household use and is not a medical instrument. The obtained indicators are for reference only and do not replace a physician’s consultation.

How to measure weight when the batteries are nearly discharged

With low charge, accuracy decreases and display errors are possible. When “LO” appears, replace the batteries—measurements with depleted cells may be incorrect.

Can the Bluetooth Body Fat Scale be used on a wooden floor

Yes, if the surface is flat and stable. Avoid soft or wobbly boards, as they affect measurement accuracy.

How often batteries should be replaced in the Bluetooth Body Fat Scale

With regular use—approximately every 4–6 months. With infrequent weighing, service life increases. For long storage, remove the batteries.

Can the Bluetooth Body Fat Scale be used immediately after the heating is turned on

Yes, once the room temperature stabilizes and the device is dry. Sharp temperature changes can cause condensation and temporary measurement errors.

Why the Bluetooth Body Fat Scale shows ambient temperature

Some versions are equipped with a built-in temperature sensor. The temperature value is for reference and does not affect weighing.

Can older adults use the Bluetooth Body Fat Scale

Yes. The scale is safe for ordinary weighing. For users over 65, bioimpedance indicators may have greater error due to physiological characteristics.

Is it acceptable to weigh if the skin is treated with cream or lotion

Not recommended. Cosmetic products impair skin conductivity, which leads to errors in body composition analysis.

Can the Bluetooth Body Fat Scale be stored vertically

Vertical storage is permissible, but before use place the scale horizontally on a flat surface and wait for the “0.0” stabilization.

Why the Bluetooth Body Fat Scale does not save measurements in the app

The cause may be a connection break during data transfer. Ensure Bluetooth is enabled during weighing and do not close the app until synchronization completes.

Is it acceptable to weigh with wet hair after a shower

Yes, if feet and platform are dry. Moisture on hair does not affect measurements, but droplets on the body may impair bioimpedance accuracy.

What material is used for the feet of the Bluetooth Body Fat Scale

Plastic supports with anti-slip rubber inserts are commonly used to ensure stability and protect the floor surface.

Can the feet of the Bluetooth Body Fat Scale be replaced

No. The design does not provide for user replacement of support elements. If the feet are damaged, contact a service center.

Why the Bluetooth Body Fat Scale clicks when turning on

A click is a normal sound from sensor activation or platform thermal compensation. It does not indicate a device fault.

Can the Bluetooth Body Fat Scale be used to weigh luggage

Yes, if the mass does not exceed the maximum load of the scale. Use the difference method—first weigh yourself with the item, then without it.

Can the Bluetooth Body Fat Scale be used with a metal implant in the leg

No, bioimpedance measurement may produce errors. Weighing is permissible only in conventional mode without activating body composition analysis.

What pressure the glass platform of the Bluetooth Body Fat Scale withstands

The platform is made of tempered glass and is rated for a load of up to 150–180 kg. Excessive pressure or impact with a hard object may damage the surface.

Can the Bluetooth Body Fat Scale be used on a marble floor

Yes. A marble surface is suitable if it is flat, dry, and not slippery.

Can the Bluetooth Body Fat Scale be placed under furniture for storage

Yes, provided the device is protected from pressure and moisture. Before use, ensure the surface under the scale is flat and clean.

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