SwanCrystal with sound function, a blue game console. - Model Name: SwanCrystal - Brand: BANDAI - Year of Manufacture: 2002 - Color: Blue - Features: With sound function - Button Layout: D-pad, A, B buttons, Start, Power Thank you for viewing. This is a WonderSwan Crystal. There is yellowing on the back of the main unit. There are no major scratches on the LCD screen. Since there is no software, I cannot confirm that it starts up. I was able to confirm that it started up about a year ago, so I think it will probably work, but I cannot guarantee it if it doesn't work, so please understand. There is no rust on the battery compartment.