TUFEN Fitness Tracker, Waterproof Bluetooth Smart Activity Wristband Sports Bracelet with Real-time Heart Rate Monitor, Pedometer Compatible with IOS iPhone & Android Smart Phone - Black Waterproof bluetooth smart fitness tracker wristband, your real-time fitness experts. Real-time heart rate tracker, all day heart rate monitor, help you adjust your sports fitness better. Real-time pedometer : real-time record, run with you. Incoming Phone Calls Push Notification : You will not miss important calls again when fitness training. Turn your wrist, the wristband will be waked up, very easy to use.