The Ragnar® approved Nathan Neutron Fire™ Headlamp will help you see clearly on your long run despite the darkness. This lightweight headlamp provides Run-Right Light™ distance and proximity lighting with a 115-lumen front beam and color options from RGB™ strobes at the sides that provide green, red, blue light. Takes two AAA batteries. Provides 5+ hours of light on high and 30+ hours on low. IPX4 Weather resistant.