Slip on the three ounce, black LEDLENSER MH4 Rechargeable Headlamp and you'll have up to 400 lumens of bright white light to illuminate any low-light or after-dark activity, plus a red light that lets you see well enough for reading or tasks, but won't disrupt night-acclimated vision. This simple lamp will run four hours at full power and 35 hours at low power on a single charge. When it's time to recharge, simply snap on the magnetic charging cable. (The light can also run on a single AA battery if need be.) Change the shape of the beam between flood and spot with LEDLENSER's Advanced Focus System—choose the narrow spot beam to light your path, or the broad flood beam to see more of your immediate surroundings. The lamp is easily controlled with one hand by a switch on top of the lamp, and the light can be detached from the headband for use as a handheld flashlight or clipped onto clothing, pack strap, etc. It has an IP54 water-resistant rating, so occasional splashing won't cause any damage.