IP68 waterproof system, supporting multiple sports functions such as swimming and mountaineering; 260mAh large capacitor, 40 days ultra-long standby, 10 days+ usage time; adopt Bluetooth BLE5.0 version; support heart rate, blood oxygen, blood pressure monitoring, heart rate and blood pressure monitoring The wristband is made of silicone, which is soft and skin-friendly, so that it can be worn without feeling. Simple disassembly design, you can replace the strap at any time SMS notification, call and other applications vibration reminder, even if you do not pay attention to the ringtone of the mobile phone, the watch will also vibration reminder, to avoid missing any important information IP68 waterproof and dustproof, hand washing, rainy days, swimming and other daily life, the watch can also be used normally, not afraid of rain, accompany you further No matter indoors or outdoors outside, 24 sports modes are combined with professional sensors to accurately measure changes in calorie consumption and heart rate according to your exercise state, comprehensively record body data and make scientific analysis, and effectively improve your exercise level More precise circuit design, thinner body with 260mah large battery , endurance up to 10+ days, with strong endurance, support you sweat like rain Main chip: REALTEK8762C Strap material: Silicone Screen material: 1.3 inch TFT screen Touch mode: full touch Resolution: 240*240 Size Flash Length: 128M Bluetooth Version: BLE5.0 Battery Capacity: 260mAh Compatible System: Android 5.0 or above, IOS 9.0 or above, bluetooth 4.0 supported