TL3100PS: This light is a self-contained technical light that pumps out a stunning 3,100 lumens. The TL3100PS Supreme has a compact body style, uses a reliable push-button switching mechanism, a battery indicator on the light itself, with and your choice of 4 power levels and an SOS function. As a self-contained light, it uses a BATCELL 18650 x 4SUPREME lithium ion rechargeable battery pack and comes with a charger. The TL3100PS also comes with a reinforced Goodman-style glove, and an aluminum lantern-style handle, which makes this light a versatile option for any diver. The TL3100PS Supreme also comes with a reinforced Goodman-style glove, lanyard and an aluminum lantern-style handle, which makes this light a versatile option for any diver. The TL3100PS deep penetrating narrower beam angle at 10 degrees will cut through the murkiest waters. The lights 3 x XML LED's provide 310 lumens of brightness at level-l, 775 lumens of brightness at level-ll, 1,550 lumens of brightness at level-lll and 3,100 lumens of brightness at level-lV with a color temperature of 6500K. The lights burn time at level-l is 30-hours, at level-II is 12-hours, at level-III is 6-hours and at level-IV is 3-hours. Built to last the light is manufactured from aluminum alloy that is anti-corrosion anodized, is sealed by a double O-ring providing a depth rating to 330' (100 meters). The light head has a tempered optical glass front lens. This light measures (L x Dia.) 4.69" x 2.48" (119 mm x 63 mm), weighs 18.24 oz. (517 g) with battery, and is negatively buoyant by -7.8 oz. (-221 g). Light comes with an owner's manual.