Do you know how many steps you take, how many calories you consume, and how far you run? Don't worry, when you wear the bracelet to do exercise, such as running, climbing, all these data can be synchronized and analyzed on your mobile phone which helps you plan your exercise time and amount more reasonably. The new version of Mi Band 2 has an OLED-display and a touch panel, which will make more information available to you. It comes with TPU adjustable wristband, giving you a skin-friendly, breathable feeling. As soon as you raise your hand, the bracelet will display the current time — easily and conveniently. Mi Band 2 record every moment staying with you. Just to live a healthy life with it! Fitness Tracker Features sleep monitor, pedometer, heart rate monitor and distance tracking functions. Upgraded Pedometer Upgraded pedometer algorithm provides more accurate measurement of the number of steps per day. Bluetooth 4.0 Enables you to connenct to most Bluetooth enabled devices like smart phone and computer to wirelessly sync. Call & Message Prompt Mi Band 2 will vibrate to notify you when a message or call is received. OLED Touch Screen Displays current time, numbers of steps, heart rate, mileage, and more date by gently pressing the touch key. Mi band 2 can automatically show current time as soon as you raise your hand. Comfortable Fit Designed to be a comfortable fit and match your personal style. IP67 Waterproof The IP67 waterproof allows the bracelet to be held in the water for a maximum of 30 minutes at a depth of 1 meter. ( Don't wear the bracelet when diving ). Locate the Band Use the app to let the band vibrate as long as it's within Bluetooth range. Compatibility Support Android 4.4 or above and iOS 7.0 or above with Bluetooth 4.0. Free APP You can search the name "MI FIT" in the "App Store" or "Google Play" to download the APP combined with Mi Band 2 to enjoy happy sports time Specifications Brand Xiaomi Bluetooth Version 4.0 Waterproof Rating IP67 Screen OLED touch screen Compatibility Android 4.4 and above, iOS 7.0 and above Battery Capacity 70mAh Standby Time 20 days Charging Time About 3h Product Weight 17g Dial Size 4.03 x 1.57 x 1.05 cm Band Size 23.5 x 1.05 cm Wearable Length 15.5-21cm