Operation has been confirmed with new batteries (LR43). The LCD display is clear with minimal degradation, the sound works normally, and each button responds well. The batteries used for the operation check (LR43 x 2) will be included in the original (opened) package. (※For safety during shipping, the batteries will be removed from the main unit and included separately) This is an item for the main unit only; there is no box or instruction manual. As it is an old item, there are fine scratches and scuffs on the main unit due to aging. (Please check the condition in the photos)