A1 Bluetooth Smart Watch For Android users, please download and install a free App & BT Notification” on your device to get best use with messaging, notification, anti-lost and remote capture function. Facebook and Whatsapp Notification Show. your mobile phone will vibrate to help you to find it. the watch bracelet will send out alarm sound. Take Photos By Smart Watch or Use Smart Watch Control The Phone and Take Photos. It’s only able to receive messages, not to send messages in such case. Please remove the back cover and battery to find the SIM card slot and TF card slot. Insert sim card to use as a phone to make calls and SMS. Find a phone with connecting the mobile phone, entering this function. Smart Features: 1. The smart watch is Bluetooth 3.0. All functions support android 4.3 and up smart phones. 2. For iPhone, this smart watch supports answer & call, phone book, music play, camera, clock, pedometer, sleep monitoring, sedentary remind, etc. But not support SMS, remote camera control, App. And it also does not support the vibration function. 3. It just supports GSM 2G/2.5G Network SIM Card as an Android Phone. The package does not contain SIM card and SD card. 4. Please fully charge the smart watch before you use it. Smart Watch Smart Life 1. Clock display: 3 ways show display clock 2. Remote photograph(Only for android phone) 3. Anti-lost, lost remind (Only for android phones) 4. Others: alarm clock, calendar, stopwatch, calculators, etc.