When the battery has died on your wristwatch, then this is for you!Easily replace your watch's battery at home with this durable universal opener.This opener is universal and fits all watches and winders with threaded cases. Adjustable spacing to fit all sizes of clocks and movements.Fits watches with a diameter between 13-56mm.Quantity: 1 watch tool for battery change.Size: 7.5 x 3cmAdjustable spacing to fit all watch sizes and movementsCompact and flexible design, 7.5 x 3cm, for convenient handling.Fits all watches and winders with threaded cases for versatile usePractical tool with a diameter capacity of 13-56mmChange the battery of your wristwatch easily at home with our durable universal opener