The Bigblue HL-1000XWN LED Aluminum Video Light System delivers a stunning 1,000 lumens light output through 4 pieces of LED, and an 100 degree perfectly even light spot. The 6500K white light reflects the true vibrant colors of the surrounding while diving. The light can also delivers great luminosity at 500 lumens in 8 degree light beam. 4 levels of brightness and Narrow beam controlled by a reliable push button with battery indicator. The 18650 rechargeable Li-ion battery pack comes with a smart charger enabling you to charge the battery in a few hours. The 4 steps power adjustment lets you choose between four output levels - IV at 100%, III at 50% , II at 25% or I at 10% extending the burn time and reducing reflections at close range. Replaceable 18650 Li ion rechargeable battery pack. Head Strap included.