Nebo O2 Beam 420 Lumen Flashlight. The O2 Beam™ is an inch flashlight that features a high-power LED beam, producing 420 lumens pure light. Nebo's patented O2 Technology™ intensifies the light beam beyond the capabilities of your run-of-the-mill standard 400-lumen light. The O2 Technology™ allows this flashlight to perform on the level of one twice as powerful. Your regular 400-lumen light will illuminate a viewing distance of roughly 250 yards; the O2 Beam™ illuminates up to 500 yards. The convex lens creates a fully focused, highly concentrated beam of light, eliminating any dull or dark spots that you get with traditional light bulbs.
The O2 has 5 lighting modes: 100% (420 lumens,) 50% (210 lumens,) 10% (42 lumens,) beacon mode (420 lumens) and defensive strobe mode (420 lumens.)
The O2 Beam™ has a smart dial so you can easily choose a lighting mode while flashlight is on or off. The anodized aircraft-grade aluminum body has integrated heat sinks to disperse heat when used heavily.
Behind the lens is a glow-in-the-dark component called Lo-Light™. Lo-Light provides a light source that uses no battery power. The Lo-Light™ charges when the flashlight is on and with natural light. The button on the rear is also glow-in-the-dark so you can easily find it. This button will also glow red when the battery is less than 20%.