1300 lumen light output with superior triple optic & triple LED design using 2nd generation Cree XM-L LEDs;Internal high-capacity Li-ion battery & compatible with external Cygolite 7.6v batteries for extended run time;8 lighting modes: Boost > High > Med > Low > Steady Pulse > Day Flash > Slow Flash > Walking; battery Lasts up to 16 hours on a single charge;Compact (260 g), water resistant and rechargeable with Illuminated light mode and battery level indicators;Includes headlight, charger and Lock-tite handlebar mount