Watch Holder FunctionWith the watch holder, the gripping area is larger, which can generate greater torque and help you open the back cover of the watch more comfortably and efficiently. In addition, using the watch holder is more stable than directly fixing the watch to the hand, which can avoid scratches to the watch and hand caused by the slipping of the watch. Protective FilmsProtective films are added to this set. Using the protective film can enhance the friction to prevent the watch opener from sliding on the watch, and also protect the watch from being scratched by the tool. Only for one type of watchThis adjustable watch opener is only suitable for notched watch backs, not for other types of watch backs. AdjustableThe watch opener can be used in the range of 15-60mm, which is suitable for most watches. You can adjust the correct distance between the parts by rolling the adjustment wheel in the middle. Instructions for UseThe instruction manual (in English) is in the form of pictures and text, explaining in detail the correct way to use the tools to avoid damaging your watch by improper use and help you solve watch problems at home.