The Xiaomi Watch S5 46mm combines a classic watch design with premium materials and modern smartwatch functionality. It features a stainless steel case with a slim profile and interchangeable strap options for a balanced and durable construction. The watch is equipped with a 1.48-inch round AMOLED display with a resolution of 480 x 480 pixels, an optimized screen-to-body ratio, and a peak brightness of 2500 nits, ensuring clear and high-contrast visibility even in bright outdoor conditions.

Powered by an 815 mAh battery, it delivers up to 21 days of usage under light conditions and up to 14 days during typical use, supporting long operating times with reduced charging frequency. With Xiaomi HyperOS, the smartwatch enables seamless integration into a connected ecosystem, offering features such as remote device control, customizable watch faces, gesture control, and flexible wrist orientation.

Advanced outdoor and training functions include improved GNSS performance, offline maps, high-speed WLAN for music downloads, and compatibility with additional fitness equipment, while 5 ATM water resistance enhances versatility in different environments. A comprehensive sensor system, including a 4 LED 4PD PPG module, accelerometer, gyroscope, barometer, and ambient light sensor, ensures accurate health and activity tracking. Connectivity is supported via Bluetooth 5.4 and WLAN, while integrated NFC enables contactless payments, with availability and functionality depending on region, bank, and software version.