★Tested and working★ Set Contents: [Main unit, box, instruction manual, four AA alkaline batteries] The box has some stains, but its shape is very good. The main unit and instruction manual are in very good condition. Purchased new 24 years ago. The serial number on the back of the main unit and the serial number on the back of the instruction manual are identical. The purchase store's stamp and the purchase date are written on the back of the instruction manual, so there is no concern about it being a copy. #GameBoyAdvance #videogames #AdvanceMainUnit