The Femto USB-C Drive Rear is a compact and lightweight LED bicycle light favored by commuters and recreational riders for its simplicity and affordability. With six solid and flash modes including a prominent 15-lumen Day flash Mode it ensures visibility in diverse conditions. Its Wide-Angle Optics provide 270deg visibility while a durable co-molded construction with IPX7 water resistance guarantees functionality in harsh weather. The light mounts securely with a rubber strap to various seat post sizes and a waterproof Composite Matrix cover protects the USB-C charging port from dirt.Compact and lightweight rear bicycle light15-lumen max output with 13-hour runtime in Day flash Mode6 solid and flash modes including disruptive Day flashWide Angle Optics for 270deg visibility