Features:100% brand new and high qualitySupport echo & noise suppression feature、provides crystal clear audio experience when making a phone call or listening to musicAble to connect two phones at the same timeLow power consumption、long stand-by timeSupport voice promptSpecifications:Bluetooth Version: 4.0Working hours of making phone calls:6hoursStandby time: 3daysWeight: 6gBattery: Lithium battery(not exchangeable)Charging time: 60min(max)Color: Black Package includes:1*Bluetoothv4.0 Portable A2DP Headset