Product Explanation
This is a consumer electronics smart scale from Xiaomi, sold through the Atomy AZA Mall channel. It is not an Atomy-branded product.
The dual-frequency bioelectrical impedance analysis (BIA) uses two frequencies (50 kHz and 250 kHz) to separately estimate extracellular and intracellular fluid, enabling more granular body composition estimates than single-frequency scales.
Key body fat percentage data has been benchmarked against DEXA (Dual-Energy X-ray Absorptiometry), the gold-standard body composition measurement method, with a correlation coefficient of ≥0.93. This indicates strong agreement for general wellness tracking. The scale is a consumer wellness device and is not a medical diagnostic instrument.
Compatible app: Mi Home / Xiaomi Home only (NOT Mi Fitness app or third-party apps). Battery life: 180 days (3 AAA batteries). Measurement range up to 150 kg.
Static heart rate monitoring is optional and can be enabled or disabled in the app.
Key Official Points
- Dual-frequency BIA: 50 kHz (extracellular) and 250 kHz (intracellular).
- 25 body composition indicators measured.
- Key fat data benchmarked against DEXA: correlation ≥0.93 (BSU20220389 study).
- Supports up to 36 family members, ages 6-80.
- Electrode pads: 58 mm diameter, 40 mm anti-slip surface.
- 180-day battery life (3 AAA batteries, 3 measurements/day).
- Measurement range: 0.1 kg to 150 kg.
- App: Mi Home / Xiaomi Home only. Connects via Bluetooth or optional Bluetooth gateway (sold separately).
- Price RM 89 / PV 3,000 — confirm on official AZA Mall page.
Common Buyer Questions
Does the customer have the Xiaomi Home app (not Mi Fitness)?
The scale is compatible with Mi Home / Xiaomi Home app only; Mi Fitness and third-party apps are not supported.
How many family members will use the scale?
The 36-profile capacity makes it suitable for large households.
Does the customer want the scale connected to a Bluetooth gateway for automatic syncing?
The gateway is sold separately and is required for auto-sync; helps set the right expectation.
Buyer Guidance
- Lead with dual-frequency precision and DEXA benchmarking as the key differentiators versus standard BIA scales.
- Clarify the app compatibility requirement (Mi Home / Xiaomi Home) upfront.
- This is a wellness tracking device, not a medical diagnostic tool — do not position it as a substitute for clinical assessment.
Research Notes
Evidence notes are for context. Ingredient or product studies do not automatically prove the same result for every user.
- DEXA benchmarking: Accuracy Study Test Report by Dr Meitao, China Institute of Sport and Health Science, Report BSU20220389. Correlation coefficient ≥0.93 for body fat percentage and fat mass.
Official Product Source
Official product link, source date and product visuals are kept together here for checking.
| Product number | M90044 |
|---|---|
| Product name | Xiaomi Body Composition Scale S400 |
| Category | All Products |
| Last checked | 2026-07-15 |
| Official page | https://my.atomy.com/product/M90044 |
Official product visuals
Official product images detail the scale's display, electrode layout, app connectivity, multi-user profile setup, and weighing mode options. Confirm current availability on the official AZA Mall page.
FAQ
Product-specific questions for this page.
Is this scale a medical device?
No. It is a consumer wellness scale for body composition tracking. It is not intended to diagnose, treat, or monitor any medical condition. Consult a healthcare professional for clinical body composition assessment.
Can I use the Mi Fitness app with this scale?
No. The S400 is only compatible with the Mi Home / Xiaomi Home app. Mi Fitness and third-party apps are not supported.
How accurate is it?
Key body fat data has been benchmarked against DEXA (the gold-standard method) with a correlation coefficient of ≥0.93, making it suitable for general wellness tracking. Individual results may vary.
Need help checking this product?
Send the product name and we will help you check ingredients, usage notes, cautions and current product details.
Contact CK