1.83" clear retina screen, 240x280 high-definition resolution, the visual experience is more comfortable Support 100+ sports modes, providing you with more professional and targeted sports data Whether you are jogging at night or exercising on weekends, the watch records your exercise duration, distance, calories, heart rate and other data at any time, allowing you to arrange exercise plans more scientifically Smart voice assistant. Make calls, check the weather, ask for addresses, ask for directions and check restaurants. Wake up the smart Al assistant at any time. Completely free your hands Connect to the mobile phone through the Bluetooth function of the watch, and turn on the music player to enjoy the charm of music After connecting to Bluetooth, the watch has the ability to make and receive calls and view the address book Equipped with an advanced dynamic heart rate sensor, 24/7 heart rate monitoring lP67 waterproof, meets daily use needs Specification: MCU: RTL8763EWE G-SENSOR: STK8321 Heart rate: LC11S Touch screen mode: Full screen touch Screen size: 1.83" Screen material: TFT Display resolution: 240*280 Touch screen technology: OGS Flash: RAM:64kB+ROM:521kB+Flash:128M Bluetooth version: BLE5.2 Bluetooth antenna: FPC type Speaker: AAC original factory (5 magnets) Buttons: with encoder Microphone: 6027 High Sensitivity Microphone PCB: 6-layer board Battery size: 55mm*20mm*25mm Battery capacity: 300mAh Battery material: pure cobalt battery Charging time: 2h Duration of use: 5-7 days Standby time: 15-20 days Standby power consumption: 600uA Battery cycle times: 450 cycles Waterproof rating: IP67 Shell material: aluminum alloy, ABS+PC Strap material: silicone Buckle material: 303 stainless steel APP: Glory Fit Suitable Android system: 4.4 and above Suitable iOS system: 9.0 or above