ElecMotive(&trade;) 2 in 1 Over the Head Stereo Handsfree Foldable Headset Boom Mic Microphone Noise Canceling Wireless Bluetooth Headphone for Cellphones iPhone iPad PC PS3 Skype (White) Stereo Bluetooth headset with back-hang style. Foldable design provides maximum portability Bluetooth 2.1 Stereo Headphones - Advanced Bluetooth CSR version 2.1 Latest technology Physical-button call answer / end & redial + Physical-button volume control Advanced 4 times Noise Cancellation technology, with DSP digital signal processing function, maintain crystal clear phone talking Compatible with all Bluetooth enabled devices, clear calls at office to provide convenient, complete liberation of your hands