--- Product Overview --- ・Allows the use of earphones, headphones, and external speakers with the WonderSwan series. ・Connects 3.5mm audio plug devices. ・Volume can be adjusted with the dial on the side. --- Product Features --- This is an earphone adapter compatible with WonderSwan, WonderSwan Color, and SwanCrystal. The WonderSwan series does not have an earphone jack, so connecting this adapter to the expansion connector allows you to connect 3.5mm audio plug devices. --- Notes --- ※ May not work if the expansion connector on the side of the WonderSwan series console is damaged or dirty. ※ The exterior and connector are 3D printed. There may be layer lines. The material and heat resistance are unknown. Leaving it in a place with high temperatures may cause deformation. ※ Regarding the product condition: Although it is listed as new and unused, it will be used once for operational testing.