Levn Hi-fi Over Head Stereo Headphone New Bluetooth Overhead Headset Headphones Earphone w/ USB for Cell Phone PSP V2.1+edr M18 Blue Standard Convention/signal Output:Bluetooth V2.1,Class 2 With the Bluetooth wireless technology, M18 gives you the convenien e wireless way to enjoy steaming stereo music transmitted from the Bluetooth A2DP Switching between music and phone calling.M18 allows you answer or make calls with the Bluetooth enabled mobile phone while you are listening to music. After you ended the call, the music will foloow to be steamed in few seconds. Supporting Profile: Headset,Handsfree,A2DP,AVRCP Besides the wireless stereo and mobile hands-free applications, you also can apply M18 to Bluetooth -enabled PC with the internet messenger such as Skype,MSN Meseenger or Yahoo! Messenger.