Appearance size :453810.8mm Surface treatment process Stainless steel shell + spherical semi-transparent glass + pumpkin type + plastic material fire pattern + stainless steel mesh belt Hardware parameter CPU : nRF52832 Memory: ROM 512KB+RAM 64KB+ external 64MKbit flash Display: 1.04inch, 240(H)RGB198(V)Dots Bluetooth: Ble4.0 Battery: 120mAh polymer battery; Standby: >15 days; Normal use: >5 days; Function parameters: clock display, multiple sets of display interface, free to switch; click long press to switch; sport mode, running, walking, climbing, cycling, swimming, table tennis, basketball, badminton, football; pedometer , sports step counting, calorie consumption calculation, exercise mileage record; stopwatch stopwatch timing functionProduct selling point 1. Turn the wrist bright screen Wearable hardware + smart APP + big data cloud service 2. Carry out physical health changes, detect health data, display risk status and assess the results 3. Full dial display, custom screen saver settings 4. Heart rate detection, detect your heart rate adjustment exercise anytime, anywhere; 5. Stainless steel metal shell, stylish, slim body; stainless steel mesh belt is more suitable for wrist