Knog Plus Front Light. A commuter front light that is super convenient producing up to 40 lumens maximum light output, with an integrated mounting system, and is USB rechargeable LEDs. Knog’s Plus Front Light comes with an Efficient Chip on Board (COB) LED which is designed for maximum brightness keeping you seen in low lighting environments and providing side visibility Button. To turn the light on the button requires a long push which stops the light from accidentally being turned on and off. Shorter button pushes change the light’s mode Waterproof. Built for commuters the light is ready to face anything you face with a 100% waterproof casing that is IP67 tested and proven against all elements Light Modes. Knog’s Plus Front Light comes with 5 different light modes which can easily be toggled between to find the best mode for your current lighting conditions and battery life. The modes included are:Mode One (Steady): 2 hours battery lifeMode Two (Strobe): 8.5 hours battery lifeMode Three (Pulse): 4.5 hours battery lifeMode Four (Fancy Flash): 10 hours battery lifeMode Five (Eco Flash): 40 hours battery lifeUSB Rechargeable. Adding to the bike light’s convenient design the light is completely USB rechargeable. This allows you to charge via any standard USB port Macbook Air Owners. When charging via the Macbook Air the magnet in the Plus light turns off the screen of your computer. This does not harm the laptop but makes your Macbook think its lid is closed Mounting. The light has two mounting systems – an integrated clip and additional magnet mount. The in-built clip allows you to connect the light to your shirt, socks, bag, etc. The magnetic mount works over the top of this with straps that attach to bike bars with a 22-32mm diameter Features. 40 lumens maximum light output5 light modesMagnetic mounting systemUSB rechargeableUp to 40 hours battery life4 hours full recharge timeWater resistant designWearable mounting systemWeighs 12gDimensions: 14 x 66 x 18mmBuy Knog Lights from Chain Reaction Cycles, the World’s Largest Online Bike Store.