Lum is one of the most powerful lights on the market. It's designed to maximise safety when you're out and about on your bike. Depending on the display mode, you get the following power levels expressed in Lumens (to within ±5%): From 9 Lumens to 35 Lumens in continuous mode. Up to 90 Lumens in flash mode. In addition to this powerful light intensity, the Lum bicycle helmet light has a beam angle of 220°! What this means in practice is that your visibility is also good to the side of your axis of movement. Once again, this makes Lum one of the best bike lights on the market in terms of beam angle. Finally, the Overade Lum also has passive reflectors at the heart of the product, which reflect the light emitted by other road users. Equipped with one (or more) Lum, you can calmly make your way through traffic with the reassuring impression that you're illuminating your surroundings almost as well as a lighthouse in the middle of the ocean!