"http://www.amazon.com/gp/product/B003ZSP0WW?tag=httpshoedaydb-20
24GHz wireless technology with 30-foot range
Use up to four controllers simultaneously on one consoleRequires 2 AA Batteries
Adjustable vibration feedback for longer battery life
Integrated headset port for Xbox LIVE play
New left and right shoulder buttons are designed for ease of use
Xbox 360 Wireless Controller - Glossy Black"