PURRL K21

All-day activity health data Real-time heart rate monitoring Keep in touch IP68 waterproof Sleep monitor Different user interfaces to suit your style specification: Wireless: BLE 5.0 Processor: Realtek8762C Memory: 512KBCPU (Flash64MB) Resolution: 0 * 240 Battery: 30mAh Standby time: 30 days of fighting Motor: oiled, vibration booster Waterproof 67 Chip thermometer: TC G sensor: STK8321 Screen size: 1.3 inches Package Included: 1 piece*smart watch 1*charger 1 piece*User manual 1*retail box notes: It is not suitable for hot water, saunas or environments with large temperature changes.