Key Features:Smart Watch Function: GSM/GPRS communication /Heart rate monitor Perfect Support Android/Apple system Step monitoring/Magnetic charge. Support Both Android and IOS: Subversion chip technology the perfect support for the dual system.Support TF and SIM card,support both bluetooth phone call and independent SIM card calls.Magnetic Charge: Special magnetic adsorption charge, automatic alignment stable and reliable data transmission use.Manufacturer General Item type: Smart Watch Sedentary Remind: APP set an half an hour/ 1 hour/ 3 hours, regularly remind you to walk around.Support Heart Rate monitor (This function is for reference only and can not be used for medical data)HD Display Touch Ease:1.52 Inches narrow border, 240*240 pixel wide viewing angle stunning color renderingSupport TF and SIM card,support GSM: 850/900/1800/1900 four frequnecy conversationBluetooth version: 4.0Resolution: 240 * 240 pixelsSize: 45.2 * 39 * 12.2 mmDisplay: 1.54 inch TFT HD LCDMemory: 128MB + 32