HOD HEALTH AND HOME Australia has been operating online and instore for 8 years. All products come with a 1 year warranty, fast shipping and special offers added to our site daily.. Nrf52840 Platform + 128M Large Memory Bluetooth 5.0 Protocol. Support Dynamic Dials Support 4+1+1 Dials. Apple's Tiled Cool Ui Supports Drag And Drop Operations. Large Memory Rich Ui Scenes And Smarter Watches. Support 20 Sports Modes + Newly Designed Dynamic Sports Icons. 1.69-Inch High-Definition Large Screen Resolution 280*320. Hrs3603 Low-Power High-Definition Heart Rate More Accurate Detection. The 350Ma Large Battery Has A Long Battery Life Reducing The Trouble Of Charging At Any Time. 3Atm Is Deeply Waterproof Suitable For Wearing In More Environments. Features: Name: Smart Watch Main Control Platform: Nrf 52840 Memory: 1 28M Touch Screen: G+F Capacitive Touch Screen: 1.7-Inch 280*320 Resolution High-Definition Square Screen Connection: Bluetooth 5.0 Ble Heart Rate: Hrs3603 Step Counter: Doctor 421 Charging Method: Magnetic Battery: 350Mah Waterproof Grade 3Atm Size 50*43*12.7Mm Net Weight (Watch): 44.5G Support Device: Android 6.0 Ios 9.0 And Above