Super Bright Bike Headlamp - Maximum brightness comes to 700 lumens. Can throw a beam over 200m into the darkness. Internal wiring applies high efficient booster circuit utilize batteries in the largest extent..4 Modes Available & 2 Cooling Devices - Weak / Middle / Strong / Strobe, Intelligent circuit control, suit for different needs. Two ears of the light is equipped with a cooling device, helping the heat dissipation..Long Battery Life & LED Indication - Comes with powerful rechargeable 8.4V 4000mAh battery pack as power source. Works Up to 2.5 hours (high mode) after full charging. Timely battery indicator helps you master battery condition..Can be used as Bicycle light - The bike light comes with 2 rubber sealing ring, either handlebar mount or head strap mount is available. Easy to install and use..Waterproof Design & Sturdy and durable - Anodized aluminum with glass lens, waterproof and weather resistant. Perfect item for outdoor sports, such as camping, traveling, hiking, cycling, searching.