Xiaomi Redmi Watch 4 Smartwatch

Specifications 1.97-inch AMOLED display with a resolution of 390 x 450 pixels. 24 hours Heart rate sensor, a SpO2 sensor for blood oxygen level monitoring. 150+ sports modes with automatic detection for some. Powered by a 470mAh battery, 20days of endurance on normal usage. Support Bluetooth 5.3, NFC connectivity, and built-in Xiao AI voice assistant. Support Xiaomi HyperOS, Android 8.0 and iOS 12 or above.