Wireless Bluetooth SmartWatch Camera NFC Pedometer Sleep Monitoring Android IOS For Android system, it supports anti-lost , phone book, remote camera and notification push including email,calls, Facebook & Twitter. 8G Support Micro sim Card For iphone system, it only supports partial functions including Pedometer, Calendar, Call Sync,Stopwatch, Handsfree , it supports music player, handsfree/making calls. Support sleep monitor,sedentary remind,calculate the number of steps, calorie consumption records and mileage calculation functions Fitness App for Android & Apple IOS . Distance and altitude , host with USB port charging , with high sensitive capacitive touch screen ,The position of NFC on the strap close to smart phone can 4.2.3 The position of NFC on the strap close to smart phone can fast finsh the bluetooth connect ion. Phone function:Make phone call directly from the smart watch, including answering and dial-up. SIM slot, support make calls by Bluetooth or smart watch , Bluetooth 4.0 Watch LCD Touch Intelligent Wristwatch With Camera NFC Support SIM Card Tracking Phone Anti-lost Call Message Sync for Andorid Smart phones .