Xiaomi S400 Pro Smart Body Fat Scale: Dual-frequency bioelectrical impedance measurement (50kHz low frequency and 250kHz high frequency)
For the fitness enthusiast or health-conscious family, the Xiaomi Smart Body Fat Scale S400 Pro transforms daily weigh-ins into a comprehensive health check. While most scales only track weight, this device offers a unique perspective: it acts as a personal health dashboard, helping you understand body composition beyond the numbers. The dual-frequency bioelectrical impedance measurement provides 25 indicators like muscle mass and visceral fat, with accuracy comparable to clinical DEXA scans—you might notice trends in water retention after a salty meal before feeling bloated.
Connect it to the Mi Home app via Bluetooth for automatic sync, and it stores data for up to 36 family members, making it ideal for households tracking progress together. The large anti-slip surface ensures stability, while the clear display shows key metrics at a glance. Use it to monitor changes over time, supporting goals from weight loss to muscle gain, and gain insights that go beyond simple scales for a smarter approach to wellness.
Features
- 25 body composition indicators measured (including body fat percentage, muscle mass, water content, protein, bone mineral density, visceral fat rate, etc.)
- Correlation coefficient ≥0.93 with DEXA gold standard for body fat measurement
- Static heart rate monitoring
- Multiple weighing modes (baby holder mode, balance testing, visitor measurement, small object weighing)
- Measurement range: 0.22 lbs to 330.69 lbs
- Minimum division: 0.22 lbs
- Bluetooth Low Energy (BLE) 5.0 connectivity
- Compatible with Mi Home/Xiaomi Home app (Android 8.0+, iOS 12.0+)
- Stores information for up to 36 family members
- Suitable for ages 6 to 80 years
- Dimensions: 11.81 x 11.81 x 0.97 inches
- Weight: 3.20 lbs
- Shell material: reinforced glass + engineering plastic
- Operating temperature: 32°F to 104°F
- Battery: 3 AAA alkaline batteries (4.5V)
- Battery life: up to 180 days
- Large-diameter electrode pad (2.28 inches)
- Enlarged anti-slip surface (1.57 inches)
- Display shows body weight, body fat percentage, heart rate, battery level
- Bluetooth gateway connection for automatic cloud sync
- Package contents: scale x1, user manual x1
- Dual-frequency bioelectrical impedance measurement (50kHz low frequency and 250kHz high frequency)
General specs
- Brand: Xiaomi
- Model: S400 Pro
- Seller: Joom
- ID: 6927f78826f1b70127e928e6
- Material: Tempered Glass
- Dimensions: 30.48, 30.48, 2.54
- Item Weight: 1.81
- 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: 50
- 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 Pro White
|
runstar FG2422 Black Gold Full-body scan with 8 electrodes for 28 metrics
|
Wyze WSCLUB_BL Black
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Rabater CF588BLE Black
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FITINDEX ES-26M White
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Etekcity EFS-A591S-KUS Black Wi-Fi connectivity for automatic data sync
|
|
| Brand | Xiaomi | runstar | Wyze | Rabater | FITINDEX | Etekcity |
| Model | S400 Pro | FG2422 | WSCLUB_BL | CF588BLE | ES-26M | EFS-A591S-KUS |
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| Price | $79.78 | $99.99 | $129.98 | $39.99 | $24.99 | $67.98 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | December 11, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 |
| Material | Tempered Glass | ABS | Aluminum Alloy, Tempered Glass | Tempered Glass | Tempered Glass | |
| Dimensions | 30.48, 30.48, 2.54 | 34.01, 39.19, 5.41 | 27.4, 27.4, 1.5 | 10.2, 10.2, 0.96 | 11.8, 11.8, 1.1 | |
| Item Weight | 1.81 | 1.9 kg | <num1>, <num2> | 1.2 | 1.1 | <num1>, <num2> |
| Connectivity | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth |
| Display Type | LCD | LED | LCD | LCD | LED | LCD |
| Power Source | Rechargeable | Rechargeable | Rechargeable | Rechargeable | Battery | Rechargeable |
| BIA Technology | BIA | Dual-Frequency BIA | BIA | BIA | 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, Weight | BMI, Body Fat Percentage, Heart Rate, Muscle Mass, Water Percentage, Weight | BMI, Body Fat Percentage, Muscle Mass, Bone Mass | BMI, Body Fat Percentage, Heart Rate, Weight |
| OS Compatibility | Android, iOS | iOS | Android, iOS | Android, iOS | Android, iOS | Android, iOS |
| App Compatibility | Mi Home | Apple Health | Apple Health | Apple Health, Samsung Health | Apple Health, Samsung Health | Apple Health, Samsung Health |
| Measurement Increments | 50 | 0.1 lbs | 45.4 | 0.05 | ||
