KingDo Bluetooth Smart Watch Android Smartwatch (black) when customer receive this time ,first need to charge it for some hours to keep battery full . Start the watch and install & download the bluetooth apk , customers can find the bluetooth apk in the first line of watch " setting" Open bluetooth for the both of watch and phone, and paring for them ,after connect bluetooth ,then the watch will work . (usually it works for android 4.3 mobile , IOS mobile not work so good , this watch in the market all the same). Languages:English, German, French, Spanish, Italian, Portuguese, Russian, Arabic Packing list: 1*Smart Watch , 1*USB cable ,1* User Manual ,1* mail box