Compact, durable, and heat-dissipating CNC machined aluminum construction Compact, durable, and heat-dissipating CNC machined aluminum construction Increased battery life by 2.5 hours over previous models 8 combined lumen and flash modes Improved optics boost output to 500 lumens Mode Memory function returns to selected mode after turning off Enhanced MOR (Maximum Optical Reflection) lens with built-in side visibility Integrated cable free recharging USB stick Advanced Li-Poly battery for superior run time Multi-fit rubber strap attachment