The Xiaomi Body Composition Scale S400 transforms a simple weigh-in into a comprehensive health assessment. Using dual-frequency BIA technology, it delivers near DEXA-level accuracy (correlation ≥ 0.93) to measure 25 key body metrics, including muscle mass, visceral fat, bone mineral density, body water, and heart rate. Designed for the whole family, it supports up to 36 user profiles with automatic recognition, plus guest and small-object weighing modes. With Bluetooth connectivity to the Mi Home app, sleek aesthetics, and up to 180 days of battery life, it is an elegant, intelligent addition to any home wellness routine.