HSINI Red Wireless Bluetooth Stereo Headset Headphone Earphone for Apple iPhone 4S 4 3GS This Headset is a wireless Bluetooth 2.1 + EDR stereo headset with Built-in microphone. It is volume adjustable with last/next music pick up, pause and play function, answering calls and ending calls & built-in echo & noise reduction circuit. It is lightweight enough for you to wear this Bluetooth Headset comfortably. Whether you are on the road, in the office, or at home, you can have your own way. Stylish Bluetooth headset, you can keep music in your life all day long.