This is a digital wristwatch by Adidas. There is no instruction manual. The battery was replaced two months ago. This item has been stored at home. I have confirmed that it works, but please understand that I may have overlooked something as I am not a professional inspector. Please check the condition of any scratches or stains in the photos. Please purchase if you understand that this is a used item. *If you don't need the box, I can lower the price a bit. Please comment. Returns and cancellations are not accepted after purchase. Brand: Adidas - Color: White/Green/Blue - Material: Silicone band - Design: Round face - Size: Free size