If you"re riding at night, let Serfas guide the way with the Thunderbolt Headlight. The 15-micro (double strength) LED strip puts out 90 lumens, giving you plenty of light to safely arrive at your destination. What"s your mounting pleasure? The USB-rechargeable Thunderbolt can be mounted virtually anywhere on the front of your bike—from the handlebars to the fork. Since the Thunderbolt is rechargeable, you can say goodbye buying batteries and say hello to saving the earth and your hard earned money. It"s your ride, your call. Charge up, light up and get riding safely at night with the Thunderbolt.