The Nano Premium Light is an underwater LED light, perfect as a backup diving torch for day and night dives. The Nano Premium is powered by 4-AAA batteries with a 60 hour burn time on a fresh set of batteries. The light features 5 super bright LED bulbs that produce 500,000 mcd of brightness. The light has a durable plastic lightweight body with a bezel type twist on/off switch and is depth rated to 100' (30 meters). Light comes with an owner's manual and is covered by a 12 month limited warranty.