Functionality has been confirmed, but the lead is not included. Also, the usage is a bit complex. You can switch colors by turning the top all the way in the direction the lead retracts, and then turning it firmly in the same direction. The color of the window will change at the same time. ・Please purchase only if you understand that this is a long-term storage item. ・There may be scratches and stains as it is an old item. Discontinued, rare, valuable, drafting, mechanical pencil, ballpoint pen