This product might be substituted for 2.4 Ghz wireless controllers made by madkatz. 2 Pack of hip gear 2.4 Ghz wireless controller - xbox: this quick-response hipgear xbox 2.4Ghz wireless controller lets you program complex moves onto 1 button with an easy-to-use macro function. Youll enjoy up to 30 range and no messy wires to trip over. Auto channel scan gets you maximum signal strength and 2.4Ghz technology means quick, reliable response. Features: expansion slot for memory cards or headset controllers (on receiver base); up to 30 hours of game play; ower switch to save batteries; auto channel scan for maximum signal strength; economic mode to extend battery life; built-in vibration feedback; rubberized analog sticks; and a comfortable, ergonomic design. This product might be substituted for 2.4 Ghz wireless controller made by madkatz.