The Apple Remote Generation 2 was made of aluminum and featured a circular button array at the top with two buttons below. The button array had an aluminum button at the center (unmarked) used to select, and four directional buttons on a single ring-shaped button marked with white dots at the top, bottom, right, and left positions. The dots were meant to serve multiple purposes. The up and down buttons could be used as volume up/down or moving up/down on menus, while the left and right buttons could be used as forward/rewind or moving right/left in menus. The two buttons below were marked “Menu” and Play/Pause (using symbols).
The remote was aluminum with black buttons and matched the aluminum iMac at the time. This remote was powered by a CR2032 battery accessed on the back of the remote using a coin.
The design of this remote was slightly revised after initial production. The original design had the ring of buttons flush with the aluminum front. The revised design of the ring button bulges out slightly. This example uses the revised button.
This remote shipped with the first generation Apple TV and could also be used with IR-capable Mac computers. This remote can be configured to pair with a single device.
References: Wikipedia.com, Apple.com, Apple Developer