FOURSEVENS Bolt-Action Light Flashlights Max: 490 lumens 1.2 hours, low: 59 lumens, 8 hours Turn the light on and off or change modes, with a unique and innovative sliding-bolt mechanism Body aircraft-grade aluminum, lens optical-grade glass with antireflective coating on both sides Special three-way collaboration between fellhoelter, tuff-writer and FOURSEVENS Uses two CR2 batteries (included)