... .Built-in 360 degree Omni direction microphone 3.OEM bth002 stereo bluetooth headset 1.Bluetooth stereo headset lets you listen to music or phone calls wirelessly2 ... button4.Lightweight,comfortable design for all-day listening5.Compatible with bluetooth enable devices,such as iphone,ipad,most computers,cellphone6.Frequency ... x D) mm : 145 x 165 x 32 Weight:230g Bluetooth 2ch Stereo Audio Headset