Description: M89 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: \u25cf Perfect Personal Health Tracker: heart rate monitor, pedometer and sleeping monitor. \u25cf Ultra-long Battery Life: it consumes less power and can generally standby for 7 - 10 days . \u25cf Waterproof Design: IP67 waterproof standard, suitable to use at home, office and during outdoor activities. Functions: \u25cf Pedometer \u25cf Sedentary reminder \u25cf Sleeping monitor \u25cf Alarm setting \u25cf Heart rate monitor Built-in chip type: NRF51822 Bluetooth Version: Bluetooth 4.0 Waterproof: Yes ...