This is the BigBlue 1300-Lumen Narrow Beam Scuba Diving Light Features: Narrow 10Adeg Beam Angle 4-level push-button on/off switch with battery level indicator Powered by a rechargeable 18650 lithium-ion battery Rated waterproof to 100M (300FT) Comes with a blue dry bag This light (AL1300NP) has been our best-selling light for the last 5+ years and shows no signs of slowing down. It&';s also a trusted back-up light for tech divers. This is the perfect light for general purpose or to peer into crevices to find hidden critters! Light provides 1300 lumens in level IV at 6500AdegK color temperature, has a narrow 10Adeg penetrating beam angle from an XML LED. Four power settings to reduce intensity and increase battery life. The light provides 1300 lumens (Level IV), 650 lumens (Level III) 325 lumens (Level II) and 130 lumens (level I). There is also an SOS function for emergency signaling. The lights burn times are 2-hours (level IV), 5-hours (level III), 10-hours (level II) and 20-hours (level I). Power is supplied by the rechargeable lithium-ion 18650 battery pack. A color-coded battery indicator lets you know when to recharge the battery for optimum use.