MAXAH&reg; Universal Wireless Bluetooth Stereo Headset Headphone Earphone Handsfree Microphone for Samsung Galaxy 3 4 iPhone 4 4S 5 5S HTC NOKIA Phone TABLET LAPTOP. (Blue) Paring the headphone with all brands (Samsung iPhone HTC NOKIA etc.) mobile phone or other device. Microphone inside,support handsfree phone call. Bluetooth Specification: 2.1+EDR,Bluetooth Profile: A2DP AVRCP. Button funtion(As the picture):Power on/off,Setting Bluetooth,Answer/reject/repeat call,Play/Pause music,Last/next song,Volume up/Down. Talking time: up to 9 hours.Charging time:2.5-3 hours.