Even with mounted LED light the adjust dial remains perfectly accessible.500 METERS VISIBILITY, Six bright LEDs emit light in an angle of 180 degrees, providing superior visibility in urban conditions, up to 500 meters.LONG LASTING AND EASY TO RE-CHARGE, IIn blinking mode the battery last up to 4 hours. Steady light lasts 2,5 hours. The lithium battery is easy to re-charge via Micro-USB.RAIN RESISTANT AND LIGHTWEIGHT, As a true outdoor product the Safety-Advanced USB LED Light features a water-resistant casing. It has a very light weight of only 13 Grams

The MET Safe-T Duo LED Light aids your rear visibility by easily attaching to the Safe-T Duo retention dial on your MET Forte or Terra helmet. It's one of the most innovative developments in lighting technology because of it's simplicity and safety benefits. Visibility is vital to remaining safe on the road, regardless of the time of year and Safe-T Duo LED Light allows you to do that by easily attaching to the Safe-T Duo retention dial - no straps, no bulky unit... Just clip on and go. Three LED provide great illumination as a secondary rear light; the flashing or constant mode options are great for adjusting to the conditions out on the road