U Watch U-pro P2 Pro2 Black Bluetooth Smart Wrist Watch 1.55" IPS Touch Screen with Tf Card Slot GSM Phone & Bluetooth Phone for Iphone 4 4s 5 5s 6, Samsung Galaxy Note 2 3 4, S3 S4 S5 Android Smart Phones UPRO-P2 is with Micro-SD Card Slot and GSM SIM Card Slot, via bluetooth technology connectivity the iPhone and Android smartphone Can Sync calling.Sync SMS/call history(Pls Notice only for android phone, you need download apk )Ring reminder when your smart phone receive a message (including Wechat, Facebook, Twitter, WhatsApp, Skype, and so on. Also Only for android phone.) Support: voice calls, text messages, music player, radio, alarm clock, 300000 camera function,pedometer, vibrating alert, Micro message, QQ, camera, mobile phone, remote for automobile anti-theft, sleep monitoring function. It is also a standby cell phone, when your smart phone without power, you can put the SIM card into the watch, it can make calls, send and receive SMS when meet the demand of emergency. Remote taking photo function: You can control your cellphone to take photo from your wrist. Anti-lost alarm function: When cellphone left watch alarm automatically, after a certain distance to avoid lose the phones