Aiwatch C5 Bluetooth Smart Phone Smart Watches With Heart Rate Sleep Pedometer Management Wrist Watch GSM Phone IOS 7.0 Android 4.4 Bluetooth 3.0 (Black) HD DISPLAY: High sensitive capacitive touch screen; Perfect match technology. HEALTH MONITOR: Pedometer to record steps, sleep monitoring to help improving sleep quality, Sedentary Reminder for break or sport for office worker. MAXIMUM COMPATIBILITY: Compatitble with all Android & IOS Smartphones; such as Apple, Samsung, HTC, Sony, LG, Huawei, ZTE, Oppo, Xiomi and so on. Note: This smart watch is 100% compatible with all android smartphones, Please Note: For iPhones it only supports partial functions including Pedometer, Calendar, Call Sync, Calculator, Clock, Stopwatch, Music player, Hands free + more SIRI VOICE CONTROL :Siri Voice Control and Smart Gestures Control gives you greatest convenience. Go completely hands free and simply speak to get what you want, or end a call with the flip of the wrist. Take a group selfie with the remote control, and play music without taking out your phone. BE NOTIFIED ON THE FLY: With message and email notifications, you can respond promptly to anything important. Never miss another call when you can answer with your wrist.