This is the BigBlue 450 Lumen 8 degree Narrow Beam LED Mini Dive Light With Glove and Pouch Features: Package Weight: 1 lbs Lumens: 450 Beam Angle: 8Adeg Burn Time: Up to 4 hours Light Source: Cree LED Power Source: 3x AAA&';s Maximum Depth: 100 Meters Tested Size: Dia, 33 x L. 121.7mm Housing Material: Anodized Aluminum Alloy In The Box: Light Lanyard 3 AAA Batteries 2 Spare O-rings Manufacturer&';s 1 Year Warranty Glove Light Holder Pouch with Retractor This 450-Lumen Dive Light comes with a narrow 8-degree beam angle and a push-button tail switch, making it an excellent choice for a back-up light.