Ultra-powerful with 1100 lumens in BOOST mode, the DUO S runs on a rechargeable battery. It is multi-beam, and has five lighting modes, making it adaptable to a variety of situations: close-range work, proximity, movement, rapid movement and long-range vision. Featuring the FACE2FACE anti-glare function, the DUO S headlamp allows those working in a group to face each other without blinding one another, to work together more effectively. It can be worn on VERTEX and STRATO helmets with the included mounting plates.