PETZL - MYO Headlamp, 370 Lumens FLIP LENS: shift instantly from a wide beam(proximity lighting) to a focused beam(long-range vision) MULTI-BEAM LIGHTING: light up the path with an output of up to 370 lumens STANDARD LIGHTING TECHNOLOGY: beam switches to reserve mode when batteries are getting low in order to preserve remaining battery life BATTERIES INCLUDED: headlamp runs on three AA/LR06 batteries COMPATIBLE: with rechargeable Ni-MH and lithium batteries