This is a vintage Gravis Gamepad Pro controller HYN4202A.
The plastic controller is beige with red, yellow, and green buttons and has a 77.25" long cord with the console connector.
It measures about 3.5" long, 5.5" wide and 1.5" deep.
The controller is in pre-owned condition and is untested, missing the joystick knob, and has discoloring.