Description About Product NO.1 F4 smartband is a device that makes you live in healthier and more intelligent lifestyle. It helps to monitor basic physical indicators like sleep quality that you can know your body condition better. It tracks steps and shows you how you're stacking up against your daily goals. Besides, you can share your data on Facebook and Twitter, which may encourage you and your friends to do exercise and raise interest in sports. Main Features: Perfect Personal Health Tracker: heart rate monitor, pedometer and sleeping monitors. Ultra-long Battery Life: it consumes less power and can generally standby for 7 - 10 days. Waterproof Design: IP68 waterproof standard, suitable to use at home, office and during outdoor activities. Some Specification Pedometer Sedentary reminder Heart rate monitor Sleeping monitor Alarm setting Battery Capacity 130mAh