Compact, super lightweight USB rechargeable front LED cycling safety light has durable co-molded construction and IPX7 water resistance rating. A versatile mounting strap quickly mounts to a variety of bar sizes. Five output modes offer up to 15-lumens. Wide Angle Optics lens provides 270° of visibility. The Femto USB Rear can run for up to 15 hours and is easily rechargeable with the included Micro USB cable. A secure, threaded composite matrix cover keeps the USB port clean and sealed. The Femto USB is perfect for commuters and recreational riders looking for a simple and inexpensive way to add visibility.