OEM (Original) 3.5mm MONO Hands-free Headset for RIM Blackberry 8330 CURVE (by Alltel / Sprint / US Cellular / Verizon Wireless) Ergonomic, MONO bud compatible with MP3/iTunes listening pleasure Brand new high quality OEM Blackberry MP3 earbud and hands-free headset for your phone Includes a Send / End key on the microphone to allow you to receive and end calls with the push of a button. Phone calls will not be in stereo but you will sound from one ear to promote safety while driving. Ergonomic earpiece with soft comfort ring provides comfortable fit even over extended periods. This Headsets allow private music and hands-free phone calls. Embedded ultra low noise technology to give high quality sound with minimum noise interference.