£59 at Amazon and Play - even more elsewhere. Delivered free via Parcelforce.
The Ear Force X31 elevates your Xbox 360 gaming experience to a new level with superior stereo sound and a crystal-clear, digital RF wireless connection. With its comfortable ergonomic design, exceptional sound quality and XBOX LIVE online chat, the X31 immerses you in the game as you communicate with online players, and blocks out distractions so you can focus on the action.
This comes with the digital RF transmitter,User guide,Velcro tabs,Stereo audio splitter cable,Xbox controller talkback cable, AAA batteries x 2