TOS USB Rechargeable Bike Headlight, 2000mAh Super Bright Bike Frontlight, IP65 Safety Commuter Flash Light, 900 Lumen(T6) USB Rechargeable Battery: Safest polymer battery recharge with any USB charger or ports with low battery indicator. Long Run Time: Enjoy up to 2-4 hours running time for high bright mode,4-5 hours for soft bright mode 9-10 hours for flash mode. IP65 Waterproof and Dustproof: IP65 waterproof design keeps the light working perfect in bad weather and situation. One Touch Control: Switch three mode(strong,soft and flash) with one button. Versatile Usage and Placement: Come with adjustable mounts for most bike handlebars and cycling helmels also compact enough to use as a standalone flashlighting or emergency light.