Pro Tac 2AAA features C4 LED technology that offers High, Low and Strobe modes. Rubber push button tail cap switch. 80 Lumens on high 10 Lumens on Low. 1.5 hour run time on High. fits nicely into your pocket anti-roll head prevetns the light from rolling away multi-function, push-button tail on/off switch for one-h and ed operation body casing and lens are impervious to shock 50,000 hour product lifetime