One of the controllers worked perfectly after calibration and button mapping on my emulator. The other one came shipped with a broken joystick. It moved freely and wouldn't snap back to the middle, as if the connection to the gamepad was broken. But for $11 I cut my losses and just tossed the broken one.
This joystick is tight and accurate, 10 function buttons. Connects to any Nintendo 64 or N64 system. A GREAT CONTROLLERS FOR MARIO KART, PERFECT DARK, AND MANY OTHER CLASSIC N64 GAMES! Compatible with: NINTENDO 64. Color: Gray. Package includes: 1 X N64 GRAY CONTROLLER.