Compact, lightweight and incredibly bright. The beam pattern is engineered for visibility at high speeds, with an ultra-wide beam from the bottom and a far-reaching beam from the top to cut through the darkness. Side lighting keeps you seen at cross-streets and intersections. The dedicated race mode cycles between boost and medium modes, so you don't have to cycle between every setting in those moments you need all the light. Self-contained unit (no remote battery pack) with a lithium ion battery. Compatible with GoPro mounts. 5 modes: high (2000 lumens), medium (1000 lumens), low (500 lumens), pulse (500), and race (1500/750). Race mode conserves battery power by utilizing just a high and a low mode. Sealed and waterproof up to 1m to handle splashes and downpours. High, medium and low steady modes, as well as a pulsing mode. Button to turn the side lights on and off. Charging and battery life indicator. Temperature sensitive auto shut-off. Micro-USB rechargeable. Universal tool-free mounting system makes it easy to install.