Thank you for viewing! Wonder Swan WonderSwan Cartridge Case Langrisser Millennium LANGRISSER MILLENNIUM THE LAST CENTURY As shown in the photos, I have confirmed that it works on my WonderSwan Color. Please check the condition in the photos as it is a vintage item. For packaging, I will take measures to prevent shocks and water damage, and ship it in a way that minimizes scratches. Please rest assured that it will be shipped via Mercari's anonymous shipping service.