D116 Fitness Smart band: If you're a fitness freak and love keeping a track of the calories burnt, sleep cycle, and heart rate, and then the D116 Smart Band is what you need. This smart band works as a heart rate tracker, fitness watch, and an activity tracker.D116 waterproof Smart fitness Band compatible with Bluetooth or Heart Rate Sensor. It is compatible to devices having Bluetooth version 4.0 and below in smartphones, Tablets and PC's and also support Android. Functions: 1.Heart Rate Monitor 2.Sedentary reminder 3.Calories 4.Time 5.Alarm 6.Anti-lost 7.Distance calculation 8.Step Monitor 10.Call Alert 11.Wrist sense Pre-requisites for use: Your mobile phone Bluetooth version must be Bluetooth 4.0 or higher Android version must be Android 4.3 or above. Working: To connect the smart band to mobile phone, you need to connect the current mobile successfully via Bluetooth. Features: Crisp Display -D116 fitness band uses the latest OLED technology in display hardware which provides excellent contrast and a visually stunning screen viewing experience, with a screen of 0.96 inches so that you get all the details you want. Long Battery Life- use more charge less, our new D116 fitness band does not require any charging for 7 days and can standby for 10 days, it can be fully charged within 3 hrs so that you use it more and care less about charging. Real Time Activity Tracking- The band keeps tracking your data round the clock without you noticing it and can store the data for 7 days without needing to sync. Battery Battery Capacity: 90mAh Standby Time: About 10days Using time: About 7days Charging Time: About 2hours Charging Type: USB charging.