This Ruxing Smart 1.75 ''Amoled screen,390450 Resolution. The smart watch meets functions such as Bluetooth connection, information notification of multiple exercise modes, voice assistant, smart reminder, heart rate and sleep monitoring, blood oxygen detection, physiological reminder, listening to music and Nfc. Magnetic charging, 260 mA battery. IP68 waterproof, a variety of optional, smart watch compatible with Ios 8.0 or Android 5.0 above, strap with soft and comfortable silicone strap and metal style for your choice.