Features: The round watch with 2.5D curved glass fits comfortably on the writst,bringing together the beauty of light trend and fashion,the 360ppi retina display is visible even under bright sunlight. 12 workout modes,Haylou RT2 recoreds distance,speed,heart rate,calories and other data in real time.12 popular sports are available,so you can enjoy the trendy sports. Battery life can be up to 12 days in daily use mode when fully charged,and the basic use mode lasts up to 20days. It is more than a watuch.More practical functions that go with the moble phone make the watch a good partner for work and life. Specifications: Product name: Haylou RT2 Man body size:45.745.712.1(mm) Strap width:22mm Watch weight:55g(with strap) Dsiplay:1.32"TFT display Resolution: 360*360 Bluetooth connection:BluetoothV5.0 Sensors: Heart rate sensor,motion sensor,blood oxygen sensor Battery cAPACITY: 330mah System requirement: Android6.0 and above;IOS 11.0 and above(Supported functions will vary with