Classic bike light with a modern twist- Built around a cylindrical housing that offers a compact and lightweight form factor- Waterproof USB-C with 2A+ fast charging capability is convenient for recharging (cable not included)- Machined aluminum construction ensures durability and efficient heat dissipation- Rigorously tested to IPX7 waterproofing standards, built to withstand various weather conditions- Choose from 7 different output modes, from the highly disruptive Daytime Flash mode to the long-lasting 45-hour runtime in Femto Mode- Infinite Light Power Pack+ compatibility offers versatility and extends runtimes