LQM I5 Plus Smart Bracelet Bluetooth 4.0 Touch Screen Fitness Tracker Health Sport Wristband Sleep Monitor TPU Material (Red) Comfortable Wear: The device is very comfortable to wear as it is made almost entirely out of silicone and is very smooth. Attach it to your wrist is very easy as everything just sort of snaps into place thanks to the stretchy silicone material; [Function Video]:https://youtu.be/6nkmws_Oac0 [Operation Video]: https://youtu.be/pTfltbDdpw0 [APP Video]:https://youtu.be/ArM28FdkUVo Designed for Healthy Life: Steps Counting, Find Your Phone, Camera Remote Control, Sedentary Reminder, SMS Reminding, Call Reminder, Incoming Calls Show, Calories Burned Measuring, Sleep Management; USB Connect: The whole front piece pulls away from the band and doubles as a USB stick. You connect this directly to your computer or a USB device to charge the built-in battery. This is also how you can connect it to your computer and unload data,if blue light Twinkle Twinkle , shows ok, and when full power, light off;when have steps in app zeroner and get SMS from cellphone, this shows sync ok; Push Reminder:Support Whatsapp,Facebook,Twitter,Skype,Message,Line,SMS etc. Fit For: iphone 4S or above (iphone 4S, iphone 5, iphone 5S, iphone 5C, iTouch5, ipad3, ipad4, ipad air, ipad mini etc IOS 7.0 or above system) Android 4.3 or above, Bluetooth 4.0. Not Fit For: Lenovo, TCL, Asus phone