Frog Strobe is the OG silicone bike light, designed for commuters and casual riders in urban environments. It's small size, long runtimes, punchy LED and easy mounting make it super useful to have on hand, either as a primary 'be seen' light or as a back-up. No Ordinary Front Bike Light An industry game changer many years ago and a design that's still loved today, the Frog Strobe continues to define what it means to be a classic Knog product. Batteries included (2x CR2032 Coin Cells) Water resistant Runtimes; 50 hrs on Constant mode & up to 80 hrs on Strobe modes 4 light modes; Strobe, DISCO Strobe, Strobe Pulse, Constant Silicone strap for easy on/off * Note, this bike light isn't USB rechargeable. However the batteries are replaceable. WHAT'S IN THE BOX Frog Front Strobe Bike Light