Description of RED Universal Sport Wireless Blueooth Headset Headphone Earphone for PC Cell Phone Laptop Skype Features:Single Track.Portable behind-the-head wearing design, convenient for sports.Allow you answer or reject phone calls anytime and anywhere.Built in Microphone for Handsfree Cell

Description of RED Universal Sport Wireless Blueooth Headset Headphone Earphone for PC Cell Phone Laptop Skype Features:Single Track.Portable behind-the-head wearing design, convenient for sports.Allow you answer or reject phone calls anytime and anywhere.Built in Microphone for Handsfree Cell Phone use or chatting on QQ, MSN.Built-in lithium battery (charged via USB).