The Xiaomi Watch S5 features a 46mm stainless steel case and a 1.48-inch AMOLED display with a peak brightness of 2500 nits. It runs on Xiaomi HyperOS 3 and offers more than 150 sports modes alongside advanced health monitoring including heart rate and blood oxygen tracking. Powered by an 815mAh battery, it delivers up to 21 days of battery life under light usage. The device also includes dual-band GNSS positioning and a built-in speaker and microphone for Bluetooth calling.