1.2.1 inch HD Full Touch Round Screen,Resolution up to 485 * 520px,The picture is clear.2.NFC access control identification, which only requires the equipment to be close to, wake up and identify in . Easy to open, more efficient3.Heart rate monitoring,Blood oxygen monitoring,Sleep monitoring,Blood pressure, sedentary reminders, water intake reminders, syphilis, respiratory training.4.Custom screen page,And dozens of page ,There is always one 5.GPS motion trajectory synchronization. You can turn on map navigation on your watchMultiple functions for outdoor activities:Compass mode for directional recognition, altitude monitoring, and air pressure monitoring! There is also an emergency SOS function! the safety of outdoor activities! Experience a different adventure! The watch comes with 96 sports modes!Display : 485 * 520 pixelsBluetooth Version: Bluetooth 5.1: support Android 5.0 system and IOS 9.0 aboveCharging : Magnetic suction wireless charging fast charging (150MA/hour)Silicone strap: 22mm width, total length 256mm, adjustable range 175-260mmMemory:RAM:(192KB) / ROM:128MWatch Size : Diameter 43.5MM/Thickness 14MMWatch Weight (With silicone strap) :200gBattery :330mAh High Density Lithium-ion BatteryAPP Name: RDFitwatch case Colour:SilverMaterial:Silica gelPackage Contents:1 x Watch1 x Charging cable2 x Strap