The Serfas USL-900 E-LUME 900 Headlight is a powerful and feature-packed bike light designed to turn night into day. It has a compact and lightweight aluminum design and produces a super bright output of 900 lumens. The headlight has an IPX4 water resistant rating and a new 3 level battery life indicator. It also has a last memory mode and a max charge rate of 1.5A, allowing it to charge from dead to fully charged in just 2 hours using a 1.5A rated charger. The headlight has solid modes with a runtime of 1.5 hours on overdrive, 3 hours on high, 3.5 hours on medium, and 9 hours on low, and flash modes with a runtime of 50 hours on daytime flash and 30 hours on low flash. It weighs 162 grams with the bracket and is powered by an LG® 1-cell Li-Ion, 2600mAh battery. The package includes a micro USB cord and a handlebar mount. Upgrade your cycling experience with the Serfas USL-900 E-LUME 900 Headlight.