?NYZ Fitness Tracker?smart bands have Continuous heart rate monitor, blood oxygen, blood pressure, Pedometer,calories,distance, sleep quality measurement, call reminder, alarm clock, message calls notifications, sedentary reminder, remote camera control, anti-lost, find the phone/bracelet, IP67 level water resistant, no worry about hands washing,splashing, sweating,rainy. However,it should not be used for diving and shower, Remember! use it at normal temperature and pressure. ?Heart Rate Monitor & Sleep Monitor ?Adopt the latest HR sensor for accurate and effective heart rate monitoring. Fitness watches can detect your sleep and analyze your sleep quality with deep sleep, light sleep and awake time. ?Call & Message? See Calls and Messages on Your Wrist, Receive call, calendar, SMS and SNS (Facebook, WhatsApp,Instagram, and Twitter ) notifications on display, never miss important messages. ?Direct USB Charging?: Fast charging the bracelet by USB port without cable, and the 80mAh rechargeable battery can working standby time for 5 to 7 days; APP support Above Android 4.4, Above iOS 8.0, Bluetooth 4.0.Please download Lefun Health app to connect it. ?Professional Services?: Any question, please feel free to contact , we will reply within 24Hrs, and we will try our best to solve it, within 1 years, we will take the full responsibility for any product quality problem,High-quality guarantee.