Note: 1. There is no APK for IOS, so four functions can't sync with IOS(1. Anti-lost, 2. Messaging, 3. Notifier, 4. Remote Camera), but all other function can use normally because no need to use app. 2. Android Phone can support all function in the description Features: GSM 850,900,1800,1900 MHz , Single Micro SIM Card Bluetooth Dialer, Call Reminder, Bluetooth Call Bluetooth SMS,IM Message Notified 1.54" TFT LCD Touch Screen 240*240 pixels 0.3M Camera, Video Recording Support Anti-loss Technology to bind phone Pedometer, Sleep Monitor, Sedentary Reminder Audio and Video Player Calendar (Synchronizable) Specification: CPU: MTK6261D Network & Connectivity: SIM Card: Single SIM Card (Micro SIM Card) Can be as a phone Frequency: GSM 850,900,1800,1900 MHz Bluetooth: Bluetooth 3.0 Storage: RAM 128M, ROM 64M; External memory: Support TF card up to 32GB Display: 1.54 inch TFT LCD, 240 x 240 pixels Camera: 0.3MP Media: Music: Support Hand-writing: Support Picture Format: JPEG, GIF, BMP, PNG Music Format: MP3, WAV Package Include: 1 x A1 Smart Watch 1 x USB charge cable 1 x User Manual