Xiaomi S400 Smart Body Fat Scale: Dual-frequency bioelectrical impedance measurement (50kHz low frequency and 250kHz high frequency)
For anyone tracking fitness or health goals, this smart scale goes beyond weight to give you a clear picture of your progress. It measures 25 health indicators like body fat percentage and muscle mass, helping you understand changes that the number on a regular scale might miss.
Use it to monitor your health over time, with features like static heart rate monitoring and support for up to 36 family members. The large anti-slip surface ensures stability, and Bluetooth connectivity syncs data to your phone for easy tracking. It's a practical tool for staying informed about your body composition and overall wellness.
Features
- 25 health indicators measured including body fat percentage, muscle mass, water content, protein, bone mineral density, visceral fat rate, BMI, body score, basal metabolic rate, lean body mass, body type, estimated waist-hip ratio, body age, skeletal muscle mass, weight control, muscle control, fat control, standard weight
- Correlation coefficient with DEXA gold standard ≥0.93 for body fat percentage and fat mass
- Static heart rate monitoring (60-100bpm normal range)
- Multiple weighing modes: weighing with baby, balance testing, visitor measurement, small object weighing (0.2-22 lbs)
- Measurement range: 0.2 lbs to 330 lbs with 0.2 lbs minimum division
- Measurement units: kg and lb
- Bluetooth Low Energy (BLE) 5.0 wireless connection
- Compatible with Android 8.0 or iOS 12.0 and later
- Product dimensions: 11.8 x 11.8 x 0.97 inches
- Product net weight: 3.2 lbs
- Shell material: reinforced glass + engineering plastic
- Operating temperature: 32°F to 104°F
- Rated voltage: 4.5V (3 AAA alkaline batteries)
- Battery life: up to 180 days
- Large-diameter electrode pad (2.28 inches) and enlarged anti-slip surface (1.57 inches)
- Supports up to 36 family member profiles
- Age range: 6 to 80 years for full body composition measurement
- Weight deviation tolerance: ±4.4 lbs for automatic user identification
- Package contents: Xiaomi Body Composition Scale S400 x1, User Manual x1
- Product model number: MJTZC01YM
- Display shows body weight, body fat percentage, heart rate, battery level, and Bluetooth connection status
- Can connect to Bluetooth gateway for automatic cloud synchronization
- Requires Mi Home/Xiaomi Home app for full functionality and data viewing
- Dual-frequency bioelectrical impedance measurement (50kHz low frequency and 250kHz high frequency)
General specs
- Brand: Xiaomi
- Model: S400
- Seller: Joom
- ID: 6927fa17edbcdf01d37b1029
- Material: Tempered Glass
- Dimensions: 30.48, 30.48, 2.54
- Item Weight: 1.8
- Battery Type: Lithium
- Connectivity: Bluetooth
- Display Type: LED
- Power Source: Rechargeable
- Battery Count: 4
- BIA Technology: Dual-Frequency 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.
View on seller's site
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$49.92
Last price update: 12/6/25
Out of stock
Shipping options
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Comparison with similar products
| This item | Recommendations | |||||
|---|---|---|---|---|---|---|
Xiaomi S400 White
|
RENPHO R-A018 Black 13 detailed body metrics analysis
|
Wyze WSCLUB_BL Black
|
FITINDEX ES-26M White
|
Etekcity EFS-A591S-KUS Black Wi-Fi connectivity for automatic data sync
|
iHealth HS2S White Full body composition with 9 metrics
|
|
| Brand | Xiaomi | RENPHO | Wyze | FITINDEX | Etekcity | iHealth |
| Model | S400 | R-A018 | WSCLUB_BL | ES-26M | EFS-A591S-KUS | HS2S |
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| Price | $49.92 | $49.99 | $129.98 | $24.99 | $67.98 | $30.14 |
| Seller | Joom | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | December 15, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 | December 9, 2025 |
| Material | Tempered Glass | Tempered Glass | Aluminum Alloy, Tempered Glass | Tempered Glass | Tempered Glass | |
| Dimensions | 30.48, 30.48, 2.54 | 11, 11, 0.9 | 34.01, 39.19, 5.41 | 10.2, 10.2, 0.96 | 11.8, 11.8, 1.1 | 12.04724408, 12.04724408, 1.047244093 |
| Item Weight | 1.8 | 1.29 | <num1>, <num2> | 1.1 | <num1>, <num2> | 4.078551847 |
| Connectivity | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth | Bluetooth |
| Display Type | LED | LCD | LCD | LED | LCD | LCD |
| Power Source | Rechargeable | Rechargeable | Rechargeable | Battery | Rechargeable | Battery |
| BIA Technology | Dual-Frequency BIA | BIA | BIA | BIA | BIA | BIA |
| Metrics Measured | BMI, Body Fat Percentage, Bone Mass, Heart Rate, Muscle Mass, Water Percentage, Weight | BMI, Body Fat Percentage, Bone Mass, Muscle Mass, Water Percentage, Weight | BMI, Body Fat Percentage, Muscle Mass, Weight | BMI, Body Fat Percentage, Muscle Mass, Bone Mass | BMI, Body Fat Percentage, Heart Rate, Weight | BMI, Body Fat Percentage, Bone Mass, Muscle Mass, Water Percentage, Weight |
| OS Compatibility | Android, iOS | Android, iOS | Android, iOS | Android, iOS | Android, iOS | Android, iOS |
| App Compatibility | Mi Home | Apple Health, Samsung Health | Apple Health | Apple Health, Samsung Health | Apple Health, Samsung Health | Apple Health |
| Measurement Increments | 50 | 0.05 | 0.05 | 0.1 | ||
Smart Body Fat Scale
$49.92
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