Vango corvus duo headtorch grey the corvus duo 80 is a three mode 80 lumen headtorch with an adjustable anti slide headband the 1w led front light can be set to high low or a flash function and three red leds light the rear which can also operate on a flash function the weatherproof casing on the duo 80 makes it ideal for camping out in the often inclement british weather more info 1w led light at the front of the torch provides 80 lumens of light 3 red leds light th