JA Chokingu Solar Calculator Hakkatte Chokingu (no batteries) Unused, but the box has some light soiling due to long-term storage. No instruction manual. I think Hakkatte Chokingu requires removing many screws like in image 4 to insert batteries. (I've never opened it.) *Unused, but it's a long-term storage item from a private individual. Please refrain from purchasing if you are concerned about the condition. * Hakkatte Chokingu will be removed from its box and shipped compactly. (The box will also be folded and packed together.) Please refrain from purchasing if you are concerned.