High quality electric front glass pneumatic tool for opening watches! Patent products, quality assurance! The appearance material is made of hardened aviation aluminum alloy throughout the body! Exquisite workmanship and solid materials! Built in high-power air pump with strong power, super fast pumping speed can reach 6 atmospheres in 1.5 seconds! Dual pressure gauge design! The display of intake and exhaust pressure is more intuitive! This machine uses the working principle of slow pressure relief to open the front glass of the watch, which is safer. The working structure of slow air release and pressure relief makes it easy and comfortable to open the front glass! Complete supporting accessories, including a set of Longines Jialan dedicated front glass grinding tools! Playing Longines and Radar Ceramics is effortless! Ensure quality and usability! Easy to operate and user-friendly, with detailed operation videos and tutorials, everyone can easily and safely open the front glass!