A working example. Takes 2 AA batteries not included. Battery compartment clean. Device is clean and wiped down with an anti bacterial cloth. Makes the typical sounds games use to make in that era, a sort of ticking sound. Game Over kept popping up when I was giving it go. Measures about 17cm or 7 inches long. Screen about 4.5 x 3.5cm. Any questions please ask. Will be sending bubble wrapped and boxed.