Miniature HID lamp gives a giant leap in brightness with no increase in battery usage. High color temperature gives the beam the same color as sunlight. Two wide angle lighting filters included for video lighting. Operates in or out of water. Up to 1000 hour lamp life. Improved spectral quality allows light to travel farther through water. Powered by disposable alkaline batteries or rechargeable UK NiCad Upgrade kit. Also uses individual nicad or NiMH C-size batteries. Polarized battery compartment reduces battery leakage. Nonbreakable locking switch. Pistol or lantern grip and rubber sleeve lanyard included. Tough, non-corroding ABS and polycarbonate plastic construction. Waterproof to 500 feet.