Vango corvus auto 100 headtorch grey the leds of the corvus auto 100 can produce up to 100 lumens of light a dual switch separately controls its white and red leds with lighting lasting for 7 hours on high mode and 50 hours on low mode this technically advanced headtorch features an intelligent battery power indicator and an infra red sensor control for use when your hands are dirty or wet rendering the corvus auto 100 a truly hands free headtorch more info infra red sensor all