Jedy D9 Bluetooth SmartWatch phone 2.5D ARC HD Screen Support SIM Card Wearable Devices Smartphone Fitness Tracker For IOS Android (Black) Unique Crown operation: Crown Controls Zoom in and out; Crown switches interface, dial by twist crown. Interactive switch design. Support SIM Card: It can be used as an independent mobile phone once it inserted a SIM card. You do not need to connect with your phone via Bluetooth, there will be no distance limited for using this smart watch. There is no any screw on it, you only need to swirl the case to open it for inserting the SIM card. Magic sound entertainment: It can change your voice into: Female voice, male voice, elderly voice, a child's voice, you can enjoy the transformation of your voice, surprise your friends! Multimedia Social: SMS, QQ, Wechat, Gmail, Email notification, Real-Time Weather, Facebook, Twitter reminder Camera remote (can not be used with IOS): Suburban travel, Camping, exploration, Mountain climbing, no one can help to take photos, right? Bluetooth 4.0, It can Support all Nucleus or IOS 7 and above or Android 4.3 and above smartphone.