Touch Control Smart Sunglasses with Stereo Bluetooth Headset for iPhone Android Windows Phone And Tablet - Black Frame Type: Sunglasses Size: Medium OS Compatibility: iOS / Android Wireless: Yes Bluetooth: Bluetooth specification: V2.1+EDR Battery Life: Music playing time :4-6 hours;Phone -call time 4-6 hours;standby time of 60hrs;Charging time :2-3 hours Parts: 1 Year Labor: 1 Year