: LED : Cree XP-L V6 LED with a lifespan of 20 + years of run time. : 1 AAA battery flower beam intensity : 625cd Max beam : 50m Input voltage range : 0.9V-3V Impact resistance : 1m Dimension : 70 mm -LRB- length -RRB- * 14 mm -LRB- head diameter -RRB- Weight : 12 gram without battery. opposition polarity. Aircraft quality aluminum body. Premium Type III fractious coated anti-abrasive. to IPX-8 stock. handy twist. and run time : Firefly : 0.08 Lm -LRB- 120h -RRB-, Medium : 10 Lm -LRB- 6.5 h -RRB-, last : 130Lm -LRB- 0.5 h -RRB-, Strobe : 130Lm -LRB- 1 hour -RRB- Operation : Turn on / disconnected Simply twist the head to turn on / disconnected the light . the head for on and loosen for disconnected. Change When the light is ON, twist to loosen then tighten the light head to change modes with the cycle of Firefly, Medium, last, Firefly, Medium, last, and Strobe.