Xiaomi has launched Mijia Body Fat Scale 4 Pro, its first smart body-fat scale to feature a built-in rechargeable battery. The new model is now available through Xiaomi Mall and Xiaomi Youpin in China and will officially enter crowdfunding on September 23.
The scale has a recommended retail price of 199 yuan, while the crowdfunding price is set at 129 yuan.
Xiaomi’s First Rechargeable Mijia Body Fat Scale
Unlike conventional smart scales that rely on replaceable AA or AAA batteries, the Mijia Body Fat Scale 4 Pro comes with a built-in 450mAh rechargeable battery and a USB Type-C charging port.
Xiaomi says the scale can run for approximately 150 days on a single full charge, based on three measurements per day. This rechargeable design eliminates the need to regularly purchase and replace disposable batteries.
Full-Surface ITO Glass Measuring Area
The Mijia Body Fat Scale 4 Pro also changes how users interact with the scale’s electrodes.
Instead of using traditional exposed metal electrode pads, the new model adopts ITO-coated tempered glass. The entire surface can serve as the measurement area, so users do not have to deliberately position their feet over specific electrode sections.
The design is also intended to accommodate different foot shapes and supports feet up to EU size 48.
0.1kg to 150kg Weighing Range
For basic weighing, the scale supports a wide measurement range from 0.1kg to 150kg.
It also offers several dedicated weighing functions, including small-item weighing, baby-holding weighing, and heart-rate measurement. These modes allow the scale to be used for more than simply checking body weight.
Dual-Frequency BIA for Body Composition Analysis
For body-composition measurements, the Mijia Body Fat Scale 4 Pro uses dual-frequency bioelectrical impedance analysis (BIA) technology.
The scale also fits into Xiaomi’s wider smart health ecosystem, allowing users to manage body-composition data alongside other compatible Xiaomi devices.
According to Xiaomi, key measurements such as body fat mass and body fat percentage show a correlation of more than 0.93 with DEXA measurements, which Xiaomi describes as the reference standard used for comparison.
After connecting the scale to the Mijia app, users can access a detailed report covering 25 body-composition metrics. The app can also provide assessments related to visceral fat levels and potential hidden-obesity risks.
Through the Mijia app, users can review historical measurements and monitor changes in their body-composition data over time.
These features turn the scale into a broader body-composition tracking device rather than a basic digital weighing scale.
Supports Up to 36 Family Members
The Mijia Body Fat Scale 4 Pro is designed for multi-user households. It can store health data for up to 36 family members, allowing different users to track their measurements through the same device.
Another new feature is body-data trend display. Instead of opening the smartphone app after every measurement, users can compare their latest result with the previous measurement directly on the scale’s display.
This makes it easier to see whether a particular measurement has changed since the last check.
Dedicated Control Button
Xiaomi has also added a dedicated physical function button to the new scale.
The button can be used for tasks such as initial device activation, resetting and unbinding the scale, and switching between weighing units. This provides a simple way to access basic controls without navigating through the smartphone app.
Mijia Body Fat Scale 4 Pro Price and Availability
Xiaomi Mijia Body Fat Scale 4 Pro is currently listed on Xiaomi Mall and Xiaomi Youpin in China. Crowdfunding will begin on September 23.
The scale has a 199-yuan suggested retail price, while the crowdfunding price is 129 yuan.
With rechargeable USB-C power, a claimed 150-day battery life, full-surface ITO glass electrodes, dual-frequency BIA, 25 body-composition metrics, and support for up to 36 users, the Mijia Body Fat Scale 4 Pro is positioned as a more feature-rich smart scale for household health tracking.