Introduction
The YUNMAI Smart Scale X is designed to provide a comprehensive analysis of your body composition. This device measures 13 essential body metrics, including weight, BMI, body fat, muscle mass, and bone mass, offering detailed insights into your health. It connects via Bluetooth to the YUNMAI App, allowing you to track your progress, set goals, and sync data with popular fitness applications like Apple Health, Google Fit, and Fitbit. This manual provides instructions for setup, operation, maintenance, and troubleshooting to ensure optimal use of your smart scale.

Image: The YUNMAI Smart Scale X, a white square scale with a digital display showing '149.0 lb', connected via USB-C cable, and a smartphone displaying the YUNMAI app interface with comprehensive analysis data.
Important Safety Information
- Do not use this device if you have a pacemaker or other internal medical device.
- Do not use this device if you are pregnant.
- The scale is not intended for the diagnosis or treatment of any medical condition. Always consult a healthcare professional for medical advice.
- Place the scale on a hard, flat surface for accurate measurements. Avoid carpets or uneven floors.
- Keep the scale dry. Do not immerse it in water or use abrasive cleaners.
- The scale surface can be slippery when wet. Step on and off carefully.
Package Contents
Verify that all items are present in the package:
- YUNMAI Smart Scale X
- USB-C Charging Cable
- User Manual
Setup Guide
1. Charging the Scale
Before first use, fully charge the YUNMAI Smart Scale X using the provided USB-C cable. Connect the cable to the scale's charging port and a standard USB power adapter (not included). A full charge provides approximately 150 days of usage.

Image: A close-up view of the YUNMAI Smart Scale X showing the USB-C charging port and the connected charging cable, illustrating the charging process.
2. Installing the YUNMAI App
Download the YUNMAI App from your device's app store. Search for "YUNMAI" on the Google Play Store (for Android) or the Apple App Store (for iOS). Install the app and create your user profile.
3. Pairing with Your Device
- Ensure Bluetooth is enabled on your smartphone or tablet.
- Open the YUNMAI App.
- Step onto the scale to activate it. The display will light up.
- The app will automatically detect and connect to the scale via Bluetooth 4.0. Follow any on-screen prompts in the app to complete the pairing process.
4. Initial Measurement
After successful pairing, step onto the scale barefoot. Stand still on the four metal electrodes for a few seconds. The scale will measure your weight and transmit all 13 body composition metrics to the YUNMAI App.
Operating Instructions
1. Taking a Measurement
To take a measurement, simply step onto the scale barefoot. Ensure your feet are placed on the metal electrodes for accurate body composition analysis. The scale will display your weight, and the YUNMAI App will record all 13 metrics.

Image: An infographic illustrating the 13 key body composition metrics measured by the YUNMAI Smart Scale X, including Weight, Fat Weight, BMI, Skeletal Muscle Mass, Visceral Fat Index, Body Fat %, Body Fat Mass Index, Bone Mass, Water %, BMR, Protein, Biological Age, and Fat Free Mass.
2. Understanding Your Body Composition Data
The YUNMAI App provides detailed reports for the following 13 body metrics:
- Weight: Your total body weight.
- BMI (Body Mass Index): A measure of body fat based on height and weight.
- Body Fat: The percentage of fat in your body.
- Muscle Mass: The total weight of muscle in your body.
- Bone Mass: The total weight of bone mineral in your body.
- Water %: The percentage of water in your body.
- BMR (Basal Metabolic Rate): The number of calories your body needs to function at rest.
- Protein: The percentage of protein in your body.
- Visceral Fat Index: The level of fat surrounding your organs.
- Body Fat Mass Index: An indicator of body fat relative to height.
- Fat Free Mass: The total weight of your body excluding fat.
- Biological Age: An estimate of your body's physiological age.
- Fat Weight: The total weight of fat in your body.

Image: A woman sitting on the floor next to the YUNMAI Smart Scale X, reviewing a comprehensive analysis report on her smartphone, which displays various health metrics and tracking graphs.
3. Multi-User Functionality
The YUNMAI Smart Scale X supports up to 16 users with automatic identification. Once a user profile is set up in the app, the scale can recognize who is stepping on it and record data to the correct profile. This feature provides personalized health insights for each family member or friend.

Image: Two women exercising, with a YUNMAI Smart Scale X in the foreground and a smartphone displaying the multi-user auto-recognition feature within the YUNMAI app, showing various user profiles.
4. Tracking Progress and Syncing with Other Apps
The YUNMAI App allows you to track your health trends weekly, monthly, and yearly. You can set goals and monitor your progress over time with detailed analysis reports. The scale also syncs your health data with popular fitness applications such as Apple Health, Google Fit, and Fitbit, centralizing your health information for a comprehensive overview.

Image: A woman performing a yoga pose, with a YUNMAI Smart Scale X nearby, and an overlay showing graphs of health progress (e.g., fat percentage) tracked over time in the YUNMAI app.

Image: A woman sitting on a yoga mat, looking at her smartphone, with icons for Apple Health, Google Fit, Fitbit, and Yunmai apps displayed, indicating compatibility and syncing capabilities.
Care and Maintenance
- Cleaning: Wipe the scale surface with a damp cloth and mild detergent. Do not use abrasive cleaners or immerse the scale in water.
- Storage: Store the scale in a cool, dry place. Avoid extreme temperatures and direct sunlight.
- Battery: Recharge the scale when the battery indicator is low. Avoid fully depleting the battery for extended periods.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Scale does not turn on. | Ensure the scale is charged. Connect it to a USB power source using the provided cable. |
| App cannot connect to the scale. | 1. Ensure Bluetooth is enabled on your device. 2. Make sure the YUNMAI App is open. 3. Step on the scale to activate it. 4. Try restarting your device and the app. |
| Inaccurate or inconsistent readings. | 1. Ensure the scale is on a hard, flat surface. 2. Step on the scale barefoot and stand still. 3. Ensure your feet are clean and dry. 4. Calibrate the scale by stepping on it, letting it display '0.0', then stepping off before your actual measurement. |
| Body composition data not showing in app. | Ensure you are stepping on the scale barefoot, with your feet making contact with all four metal electrodes. |
Product Specifications
- Product Dimensions: 10.2 x 10.2 x 1 inches
- Product Weight: 3.09 Pounds
- Batteries: 1 Lithium Ion battery (included)
- Measurement Range: 11-400lb / 5-180kg
- Display Type: LED
- Connectivity: Bluetooth 4.0
- Special Features: Body Fat, Bone Mass, Muscle Mass, Body Weight, Basal Metabolic Rate, BMI, Auto Shut Off, Rechargeable

Image: An image detailing the compact and durable design of the YUNMAI Smart Scale X, highlighting features like sleek rounded edges, ultra-durable tempered glass, and 4 anti-slip pads. It also shows the measurement range and dimensions (10.2 inches / 260mm).
Warranty and Support
YUNMAI products are designed for reliability and performance. For warranty information or technical support, please refer to the official YUNMAI website or contact their customer service directly. Keep your purchase receipt for warranty claims.





