It is easily connect with Android and iOS devices via Bluetooth 3.0. Compatible with most Android and iOS mobile phones and tablets including iPhone Samsung?? HTC?? Sony?? Motorola?? Blackberry etc</br>Note: For iphone only supports calls.there is no app available till now. Some functions are not usable to your devices including messaging?? notification?? remote capture?? anti-lost</br>Install a free APP on Android device to get opt" with functions of BT dialer?? call log?? messaging (only receive message)?? notification?? pedometer?? sleep monitor?? sedimentary anti-loss etc. Only part of these functions are available when connected with iOS device</br>Insert a micro SIM card to use it as a solo watch phone?? support GSM 850/900/1800/1900 frequency band. You can make calls?? send messages?? enable Facebook and what's app and surf internet freely</br>Comes with a 2.0MP camera to capture and record every brilliant moments with a single operation. It supports external storage by up to 32G TF card so you can store and play video?? music from the watch 1.56 INCH LCD capacitive touch screen. 380mAh lithium battery that is easy to charge with the provided micro USB cable</br></br>Product Description</br></br><b>Notes for Use</b> <br>? For Android users?? please download and install a free App "tion" on your device to get best use with messaging?? notification?? anti-lost and remote capture function. <br>? For iOS users?? there is no app available till now. Some functions are not usable to your devices including messaging?? notification?? remote capture?? anti-lost.<br>? Browser?? Facebook and what's app will not be available without a SIM card. It's only able to receive messages?? not to send messages in such case.<br>? Please remove the back cover and battery to find the SIM card slot and TF card slot. The original password is 1122. Enter the password to restore factory setting when necessary<br><b>Specifications</b> <br>