With a Ni-MH rechargeable battery pack, the DUO LED 14 ACCU headlamp is designed for serious cavers. This headlamp is waterproof to -5 meters and has a halogen light source for focused, distance lighting, and a second, 14 LED source for long-duration, proximity lighting. The user has three constant proximity lighting modes at his disposal. The lamp automatically switches to reserve mode when batteries are nearly spent. The rechargeable battery is quickly recharged using its wall charger.