Nitecore SRT6 930 Lumens Infinite Brightness Adjustment LED Flashlight, Black Purpose-designed for law enforcement, hunting and tactical applications The world's first line of flashlights to feature third generation SSR (smart selector ring) technology "Smoothly and rapidly select brightness levels and function by rotating a smart selector ring Utilizes the latest CREE XM-L (XM-L2 T6) LED for a maximum output of up to 930 lumens "Second generation of 'Crystal Coating Technology' along with 'Precision Digital Optics Technology' provide extreme reflector performance