DigiYes&reg; Wireless A2DP Stereo Retractable Ring Bluetooth Headset with Microphone Compatible with bluetooth enabled devices, such as most computers, cellphones, for iPhone / iPad / iPod and other MP3 / MP4 players. Bluetooth headphone lets you listen to music or take phone calls wirelessly. With retractable headset string, you can adjust according to the actual use. Built-in noise-canceling high-sensitivity microphone ensures that you'll be heard. Ensures crystal clear stereo audio from the majority of current smartphones & tablets.