The plugger front bike light is a light inspired by knogs roots and like its little sibling the plug comes in overmolded soft touch tpu rubber like material. The plugger produces a powerful 350 lumens and is packed with features including a low battery indicator cut outs in the front light body for improved side visibility and it's usb rechargeable. Designed to work with all genres of bicycles from commuters to road bikes the plugger comes with two silicone bands for securing it to handlebars 22 27mm and 27 32mm. The plugger is a light for every day for every ride for everybody. Features increased side visibility cutouts in the side of the plugger design result in improved side visibility. Given the fact that 78% of accidents happens with cars not seeing bikes at intersections any additional visibility from the side can only be a good thing usb rechargeable recharging is via the micro usb port conveniently located behind the large rear button cable not supplied easy one button operation the pluggers oversize button allows the user to operate with ease even when wearing gloves low battery indicator the pluggers clever side visibility window doubles as low battery indicator so youll know when exactly when your light needs recharging specification bulb type led light output max 350 lumens run time max steady 1.5 hrs eco flash 180 hrs charge time 5 hours waterproof yes ip66 rating light modes 5 fits handle bars 22 32mm diameter plus head tubes to 7.9 inches rechargable yes micro usb port dimensions h 43 mm x w 33 mm x l 87 mm weight 85 grams low battery indicator yes strap material medical grade silicone operating temperature 20 to 50 degc 4 to 122 degf optimum charging temperature 20 to 22 degc 68 to 72 degf room temperature