The watch opener can open the back cover of many kinds of watches in the market. Using this adjustable case opener, you can easily open the back case of your watch. The size of the bed opener is smaller and the weight is lighter. You can take it with you or put it in the store or at home. You don't need professional knowledge to operate and use the meter opener. Using the upper gear and the lower handle, three jaws can be adjusted. The watch opener is made of high quality alloy. This metal is corrosion resistant, strong and does not deform. Product Description The description: Suitable for the opening of the cover bottom of the watch and replacing the batteries. Main Material: Metal Color: Silver Item Size: Approx. (L*W) 3.7*3.5cm Gross weight: about 137g Package included: 1* Watch cover opener Note: 1inch=2.45cm/1cm?0.393inch Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the photo may not reflect the actual color of the item. Thanks!