Nintendo - Game & Watch - Multi Screen - Mario Bros. (MW-56) - Handheld game console - In original box

Mario Bros. is an action Game & Watch video game, initially released as a dedicated handheld electronic game on March 14, 1983. The game was the first appearance of the character Luigi, who is the brother of Mario. The game features Mario and Luigi moving bottle crates between conveyor belts in a bottling plant. The goal of the game is to stack the crates into delivery trucks.

The console weighs about 146 grams (5.1 oz), and the console's dimensions when closed are 96 by 89 by 24 millimeters (3.78 in × 3.50 in × 0.94 in). The dimensions of each of the two screens are 54 by 35 millimeters (2.1 in × 1.4 in). The only inputs for the game are two rocker switches, with one on each side of the console. The console's components consists of a single large-scale integrated CMOS chip, a crystal oscillator, and a liquid crystal display. The console has a built-in 12-hour clock, and an alarm which can be set at 1-minute increments. The console is powered by two LR44 batteries.