Xiaomi Mi Watch. – Band material: Thermoplastic polyurethane (TPU) – Display type: AMOLED – Display resolution: 454 x 454 pixels – Display diagonal: 3.53 cm (1.39´´). – Battery type: Built-in battery – Battery technology: Lithium-Ion (Li-Ion) – Battery capacity: 420 mAh. – Recommended activity: Cycling, Hiking, Motor sports, Running, Swimming – Heart rate data transfer: Bluetooth – Clock mode: 12h/24h. – Width: 45.9 mm – Depth: 53.4 mm – Height: 11.8 mm