The Xiaomi Body Scale S400 is different from the Mi Smart Scale 2 in terms of body indicators, heart rate monitoring, Bluetooth connection and operating system.
The differences between the Xiaomi Body Composition Scale S400 and the Mi Smart Scale 2 are listed below:
1. The Xiaomi Body Composition Scale S400 supports a single measurement generating an analysis report of 25 body composition indicators evaluating body fat, muscle mass, water content, protein and bone mineral density, while the Mi Smart Scale 2 does not support;
2. The Xiaomi Body Composition Scale S400 lets you track your heart rate with static heart rate monitoring, while the Mi Smart Scale 2 does not support;
3. The Xiaomi Body Composition Scale S400 supports Bluetooth connection, Bluetooth gateway connection and Cloud sync, while the Mi Smart Scale 2 only uses Bluetooth Low Energy 5.0;
4. The minimum scale increment of the Xiaomi Body Composition S400 is 0.1kg, while that of the Mi Smart Scale 2 is 0.5kg;
5. The supported operating system of the Xiaomi Body Composition Scale S400 is Android 8.0 or iOS 12.0 and later, while that of the Mi Smart Scale 2 is Android 4.4 or iOS 9.0 or later;
6. The product dimensions of the Xiaomi Body Composition Scale S400 are 300 × 300 × 24.55mm, while that of the Mi Smart Scale 2 is 280 × 280 × 22mm;
7. The product net weight of the Xiaomi Body Composition Scale S400 is 1.45kg, while that of the Mi Smart Scale 2 is 1.2kg.