Zibo A18 Smart Bluetooth 3.0 NFC Waterproof Watch Phone Camera TF Card Wristwatch for IOS iphone and Android Smartphone & Tablet PC (Black) Compatibility: All Android and iOS Mobile Phone & Android Tablet PC.Android Mobile Phone: Samsung, HTC, Sony, LG, HUAWEI, ZTE, OPPO, XIAOMI, and so on.iOS Mobile Phone: iPhone 6, iPhone 6 plus, iPhone 5, iPhone 5s , iPhone 4, iPhone 4s (This APP can' t be installed by iOS,Apple system can' t sync SMS and Bluetooth push information, but other functions can be used by iPhone);Android Tablet PC: Samsung, Nexus, Onda, Newsmy, and so on. Function:Passometer, Sleep Tracker, Message Reminder, Call Reminder,Answer Call, Dial Call,Remote Control, Push Message, Altitude Meter. Bidirectional anti loss, Anti lost reminder; Bidirectional search. Entertainment:MP3/MP4 local playback;Bluetooth music playing NFC:No need to search,bluetooth pairing,electronic business card.