TV Mahjong Game I bought this for my grandmother to help prevent dementia, but she hasn't used it, so I'm selling it. - Model Name: TV Mahjong Game - Connection Terminals: AV terminals (yellow, white) - Power: USB connection - Power Supply: 6V 3A - Included: Box, instruction manual, Phillips screwdriver Power can be supplied by either 4 AA batteries inserted into the main unit or via USB. You can play by connecting it to a video input on a TV, etc. Since it is brand new and unused, I have not tested its operation. All accessories are included. Please ask if you have any questions about the condition or accessories. The outer box has damage, tears, and writing in ballpoint pen by my grandmother (see photos 4-6). Please purchase only if you understand this. Instant purchase ○ Price negotiations ○ Requests for combined purchases with other items ○ Repeat customers will also receive a discount if you contact me.