Odd isn't bad but it is different. It works based off options the user sets. It can and does emulate mouse and keyboard inputs and Xbox controllers.
It uses left circle pad as wasd or the dpad on 360 controllers. It has two buttons on the bottom one is e the other is space bar. It uses 2Aa batteries and is fully wireless with a usb receiver. It can be used as a wireless mouse out side of steams big picture mode. It is fully integrated with that and even has a typing mode.
The controller is far better in terms of functionality than the shot box 360 controllers. It is compatible with 90% of games and when it isn't you can actually set it up to be. Along with that anyone can share their setups so there is always different ways to play.
The controller actually fits in hands correctly unlike the 360 controller and instead of stretching thumbs to reach for your analog stick it dips down so no sore thumbs.
Best controller by far period it is a steal for $50