Max Lumens:450Max Beam Distance:341 Feet (104 meters)Max Runtime:100 hoursLighting Modes:5 brightness levels, red light, and red SOSBulb Type:Luminus SST20 white light, 2835 red LEDLens Material:PolycarbonateSize:Width: 2.52 (64mm) Height: 1.89 (48mm) Depth: 1.06 (27mm)Weight:3.43 oz (97.2 g) including batteries and headbandBattery:Three included Alkaline AAA Batteries