Fbandz TW64 Fitness SmartBand is made by TPU Polymer composite materials, containing features like light, high resistant and high damage resistance. Bluetooth 4.0, using international first-line sensor, it will be a good one has accurate data synchronization, miss no in-calling and accurate calculation of sport and sleep. Functions:1. Pedometer: can count steps, distance and calories.2. Sleeping monitor. Can detect your sleeping quality.3. Time display. Can be used as a watch.4. Sedentary reminder. In-call reminder, sedentary reminder, drinking reminder, wake up alarm etc.5. Call and message reminder (only support android phone).6. Remoter camera.***Instructions***Please install Getfit 2.0 app on your smartphone through Google play store and apple store.Apps are available for Android and Apple users.App is not available for windows users.Minimum Android 4.4 & iOS 7.1 is required.Minimum Bluetooth 4.0 is required.Do not wear while take bathing & swimming.Please charge the band 90 minutes before use. Charging can be done through Laptop, Desktop, Power Bank & Mobile USB charger.Band is not required to connect all the time thus it will disconnect automatically, it will SYNC at hourly basic while it is in range. You need not carry your smartphone with band. It record 7 days data. It will SYNC when it connected.You can watch your step, distance & calories on your band.Charger is not included in the Box.Please do not try connect without app, it will showing error. It will only connect(bind) with Getfit 2.0 App Only.Please follow user manual.