MyKronoz ZeTime Original Hybrid Smartwatch 39mm

Operating system Android,Ios Special feature Heart Rate Monitor Connectivity technology Bluetooth Wireless communication standard Bluetooth Battery cell composition Lithium Ion Shape Hands,Heart,Round Mechanical Hands with Smart Movement, Full Round TFT Color Touch Screen, 30 days battery life, 5 ATM Water Resistant Sapphire Glass, Stainless Steel Case, Smart Crown Navigation Activity Tracker, Heart Rate Sensor, Sleep Monitor Changeable Watch Faces, Quick Release Wrist Bands iOS 8 Plus and Android 5.0 Plus Smart App, USB magnetic charger