AK77 BT Call Smart Watch, Support Blood Oxygen Blood Pressure Heart Rate Sports Health Monitoring Fitness Tracker Features: 1. Jerry JL7013A6128M large memory, supporting BT dual mode 5.3 2. Support Bluetooth calls, one click connection, making call scenarios more convenient 3. Cool UI, supporting drag and drop operations and shortcut center functions 4. Large memory, built-in six dials and four menu modes, rich UI scenarios 5. Support 11 commonly used sports modes and 50+sports modes; 6. 1.43-inch large screen with AMOLED high-definition resolution; 466 x 466 7. GH3018 low-power and high-precision heart rate and blood oxygen, supporting live body recognition and more accurate detection; 8. IP67 is deeply waterproof, suitable for wearing in more environments. Hardware Specifications: 1. CPU: Jerry JL7013A6 2. Memory: 128M 3. TP: G+FCST820 4. LCD: 1.43-inch AMOLED, resolution: 466 x 466 5. Motor: 0827 flat motor, soldered wire type 6. Speaker: 1012, Deep waterproof speaker 7. MIC: 4015Deep waterproof 8. BT: BT 5.2 9. Communication formatdata transmission: BT 10. Heart rate: GH3018 11. G-Sensor: STK8321, Accurate step counting 12. Charging method: 2PIN magnetic suction line with a spacing of 7.6mm 13. Battery: 400mAh, V3.7 general pressure 14. Waterproof grade: IP67 15. Smart Watch: 47x 47x 11mm(excluding heart rate protrusion) 16. Bracelet 22mm wide, with a total strap length of 265mm and an adjustable area of 170-248mm Functions: 1. Basic software functions: Shortcut Bar (Control Center), Data (Step Count, Distance, Calories), Heart Rate, Blood Pressure, Blood Oxygen, Sleep, Wrist Raise Screen, Weather, WeChat Sports, Information, Reminders (Messages, Drinking Water, Sitting Long, Alarm Clock), Womens Health, Stop Watch, Countdown, Find Phone, Find Band, Shake to Take a Picture, Dial Switch, Music Control Settings (language selection, brightness adjustment, bright screen duration, vibration setting, factory reset, version information), components (