Ah, you got the classic, I bought their SNES pad a while ago.
Yeah, great stuff and if you can boot it to keyboard mode, it'll work with most PC games (if keyboard keys can be configured) as opposed to being booted to USB joystick mode which is the default. Very, very close to the weight and feel of an original SNES pad! A solid knock-off!
Cons: The battery is cheap, lasts ~24 hours. However, there's plenty of room to buy a better quality, higher milliamp 5V replacement so it can last longer. Sucks they cheaped out in that area. I can only speak for the SNES version of course, but yeah...