Five modes, plus BOOST, to adapt lighting to any situation: Convenient lighting: wide, low-intensity beam maximizes burn time Proximity lighting: mixed beam with brightness suited for comfortable proximity vision Lighting for movement: mixed beam offers a focused component for easily moving around Lighting for rapid movement: more powerful mixed beam for anticipating the terrain Distance vision: highly focused beam for seeing at a distance BOOST mode provides temporary access to maximum power of 1100 lumens Waterproof to -1 meter for 30 minutes in fresh water Excellent resistance to falls, to impacts and to crushing Rechargeable in 4 hours with quick 110/240 V wall charger (included) Energy gauge Removable and replaceable (available as accessory) Safety and comfort when traveling in a group, thanks to the FACE2FACE anti-glare function: automatically dims the light when two or more beams cross, enabling those using DUO headlamps to face each other without blinding one another Large, easy-to-use button, even with gloves Automatically locks to avoid accidentally turning it on during transit or storage Automatically switches to reserve mode when battery is almost drained Balanced, thanks to the remote battery pack worn on the back of the head Adaptable to any type of helmet, thanks to the PRO ADAPT adhesive plates, available as accessory Detachable, washable headband (included)