Xiaomi S400 Smart Body Fat Scale: Dual-frequency bioelectrical impedance measurement (50kHz low frequency and 250kHz high frequency)
Meet the Xiaomi Smart Body Fat Scale S400, designed for the health-conscious individual who wants more than just a number on a scale. Whether you're tracking fitness progress after a workout or monitoring family health over time, this scale provides actionable insights. While many scales focus on weight, this one offers a unique perspective: it's a comprehensive health dashboard for your home, helping you understand body composition beyond pounds.
The scale analyzes 25 indicators like body fat percentage and muscle mass with DEXA-level accuracy, so you see real changes, not just daily fluctuations. It supports up to 36 family members, making it easy to check on kids or share with roommates. The large anti-slip surface ensures stability, and the display shows key metrics at a glance. Use it with Bluetooth to sync data to your phone, turning raw numbers into a clear health story for better decisions.
Features
- Analyzes 25 body composition indicators (e.g., body fat percentage, muscle mass, water content, protein, bone mineral density, visceral fat rate)
- Static heart rate monitoring
- Multiple weighing modes (e.g., baby weighing, balance testing, visitor measurement)
- Large-diameter electrode pad (2.28 inches)
- Enlarged anti-slip surface (1.57 inches)
- Battery life up to 180 days
- Bluetooth Low Energy (BLE) 5.0
- Rated voltage 4.5V (AAA alkaline batteries x3)
- Operating system compatibility: Android 8.0 or iOS 12.0 and later
- Product dimensions: 11.81 x 11.81 x 0.97 inches
- Measurement range: 0.22 lbs to 330.69 lbs
- Minimum division: 0.22 lbs
- Shell material: Reinforced glass + engineering plastic
- Operating temperature: 32°F to 104°F
- Product net weight: 3.20 lbs
- Package contents: Xiaomi Body Composition Scale S400 x1, User Manual x1
- Supports up to 36 family members
- Age range: 6 to 80 years
- Weight deviation tolerance: ±4.41 lbs for user identification
- Small object weighing capability (0.22 lbs to 22.05 lbs)
- Gateway device compatibility (requires separate purchase)
- Display shows body weight, body fat percentage, heart rate, battery level, Bluetooth connection status
- Encouragement for achieving key health benchmarks
- Cloud sync via Bluetooth gateway
- Not recommended for individuals with implanted medical devices or pregnant women
- Dual-frequency bioelectrical impedance measurement (50kHz low frequency and 250kHz high frequency)
General specs
- Brand: Xiaomi
- Model: S400
- Seller: Joom
- ID: 6927f2c5edbcdf01d37aa122
- Material: Tempered Glass
- Dimensions: 30.48, 30.48, 2.54
- Item Weight: 1.8
- Battery Type: Lithium
- Connectivity: Bluetooth
- Display Type: LCD
- Power Source: Rechargeable
- BIA Technology: BIA
- Metrics Measured: BMI, Body Fat Percentage, Bone Mass, Heart Rate, Muscle Mass, Water Percentage, Weight
- OS Compatibility: Android, iOS
- App Compatibility: Mi Home
- Measurement Increments: 100
- First listed by seller: 12/6/25
If you are interested in more details, you can find full information on the seller's page.
Shipping options
United States
Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Xiaomi S400 White
|
Arboleaf CS10K Black
|
Witcaremed CF577BLE+WIFI Black
|
GE CS10G Black
|
ORCAZE OR-8E25-B2 Black
|
FITINDEX FT-28WBL Black
|
|
| Brand | Xiaomi | Arboleaf | Witcaremed | GE | ORCAZE | FITINDEX |
| Model | S400 | CS10K | CF577BLE+WIFI | CS10G | OR-8E25-B2 | FT-28WBL |
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| Price | $46.05 | $119.99 | $149.99 | $99.99 | $79.99 | $46.99 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | January 29, 2026 | January 14, 2026 | January 21, 2026 | January 21, 2026 | January 21, 2026 | January 21, 2026 |
| Material | Tempered Glass | Tempered Glass | Tempered Glass | Tempered Glass | ||
| Dimensions | 30.48, 30.48, 2.54 | 30.99, 30.99, 2.54 | <num_width>, <num_height>, <num_z> | 12.0, 12.0, 2.5 | 10.2, 0.9, 10.2 | |
| Item Weight | 1.8 | 2.2 | <num1>, <num2> | 2.05 | 0.9 | 1.41 |
| Connectivity | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth | |
| Display Type | LCD | LCD, LED | LED | LCD | LCD | |
| Power Source | Rechargeable | Battery, Rechargeable | Rechargeable | Rechargeable | Rechargeable | |
| BIA Technology | BIA | Dual-Frequency BIA | Dual-Frequency BIA | Dual-Frequency BIA | Dual-Frequency BIA | BIA |
| Metrics Measured | BMI, Body Fat Percentage, Bone Mass, Heart Rate, Muscle Mass, Water Percentage, Weight | BMI, Body Fat Percentage, Muscle Mass, Weight | BMI, Body Fat Percentage, Muscle Mass, Water Percentage, Weight | BMI, Body Fat Percentage, Bone Mass, Muscle Mass, Water Percentage, Weight | BMI, Body Fat Percentage, Muscle Mass, Bone Mass, Water Percentage, Weight | BMI, Body Fat Percentage, Muscle Mass, Weight |
| OS Compatibility | Android, iOS | Android, iOS | iOS | Android, iOS | iOS | |
| App Compatibility | Mi Home | Apple Health, Garmin, Mi Home, Samsung Health | Apple Health | Apple Health, Garmin, Mi Home, Samsung Health | Apple Health, Samsung Health | |
