Ultra-long battery life: Adopting the latest low-power chip, charging once uses about 5 days Health management: The product has real-time heart rate, blood pressure, and blood oxygen detection for your health Exercise companion: Built-in daily exercise mode, let you love exercise from now on Reminder function: Display notification of incoming calls and messages, every moment can maintain close communication with the phone Call function: With Bluetooth-compatible call function, life is more convenient One key connection: Only need APP connection once, can realize the function mode and call mode switching Specifications: Program: RTL 8763EWE Battery capacity: 230mAh Endurance: 5 days (normal use) Waterproof rating: IP67 Screen size: 1.39 inches Resolution: 360*360Px Memory size: 128M (built-in small games) Charging method: thimble charging APP Name: DaFit  Package included:1 x Smart Watch1 x Charging Cable1 x English and Chinese ManualOther items not included