Go Bright Rechargeable 1200 Lumen Road, Mountain Bike Headlight, New 6400 mAh Rechargeable Battery- 3 + Hours on High Beam with Free Taillight EXTREMELY BRIGHT 1200 Lumen CREE LED Technology - This bike light has an upgraded 6400 mAh silicon Waterproof Battery with a runtime of 3.5-4 hours on high beam, up to 6 hours runtime on medium. SAFETY - This light also offers a strobe and S.O.S light for daytime use for up to 24 hours EXTERNAL SILICON RECHARGEABLE BATTERY - New double strap battery holder included BEST BIKE LIGHT SET for BIKING/MOUNTAIN BIKE/CAMPING/HIKING/RUNNING with included Headlamp Accessories 1 YEAR GUARANTEE ON BICYCLE HEADLIGHT/ 1 YEAR WARRANTY ON BATTERY EASILY INSTALLS IN MINUTES-Quick Release for Anti-Theft. 3 LED TAILLIGHT/ SUPER BRIGHT with 3 modes and 500 feet Visibility