Does replacing batteries when your watch battery runs out often bother you? Watch Battery Replacement Tool Kit make it easy for you to remove and replace the back of your watch quickly and effortlessly. It is the most effective solution for watch case opening. You don't have to go to a watch repair shop to replace batteries at a high anymore. Product feature Easy to use, completely adjustable. It have adjustable tempered pins for easy use on water resistant cases. The tool can minimize the risk of slipping and scratching the back of the watch. Used to fix the housing when opening and closing the waterproof back, providing the best solution. The jaw distance can be adjusted from 13 mm to 56 mm, suitable for all kinds of watches. The large case holder can be used to fix the large case, including the diving meter, and open the case with a wrench. When your watch is working, the tool can also be used as a cage to make your work more relaxed. The tool vise can be installed on the worktable. The device will firmly fix the 70 mm diameter box so that you can easily replace the watch battery. Package included: 1 x Watch Back Case Opener 1 x Watch Holder How to Use 1.Put the Watch Case Holder in place, adjust the white posts, turn the black knob and make it fit snugly around the watch face plate. 2.Then roll the adjustment wheel of the Watch Back Case Opener to set the bit spacing to fit your watch's back case grooves. 3.Just turn it and your watch back case is open up. Scope of application The jaw distance can be adjusted from 13 mm to 55 mm, suitable for all kinds of watches. Used to fix the housing when opening and closing the waterproof back, providing the best solution.