LAYEN&reg; Bluetooth Fitness Activity Tracker & Sleep Monitor Smart Wristband (Black, BeFit T3) Improve your health and get fit with the LAYEN BeFit Bluetooth Activity Tracker. Use this multifunctional wristband as a watch, a pedometer and a sleep monitor. Requires use with a Bluetooth enabled mobile phone or other device (tablet / iPod etc) to use all features / functions and record and save data. Check Compatibility below. Sync to your phone and use it as a Bluetooth camera shutter and for call or text notifications. It can even tell you who is calling! Complete with LED display so you can check progress direct on the wristband as well as the Phone App. Unlike other models in the market, LAYEN's range of Activity Trackers come with an LED display so you can check your progess throughout the day directly from the wristband, instead of having to soley use the App on your phone. Tracks steps, distance, calories burned and active minutes. Sleep quality monitor for deep/light status, 0.49 inch OLED Screen, GSensor with Bluetooth BLE chip, Caller ID and Message, Remote Camera shutter for better Selfie, Remote search for phone, 45mAh LiPolymer Battery, Safety TPU Material with Showerproof, 5 days working time, 2 hours charge time. Compatibility: Please note, as with most Bluetooth Wristbands  this product can only support the following selected mobile devices: IOS must be IOS7.0 or above, Bluetooth 4.0; Such as: iPhone 4S, 5, 6,6 plus,iPod touch5,etc. Android must be Android4.3 or above, Bluetooth 4.0; Such as: Samsung S4, Note3,etc