Compact, super lightweight USB rechargeable LED rear cycling light. Its durable co-molded construction is minimal and has an IPX7 water resistance rating. A versatile mounting strap quickly mounts to a variety of post sizes. Five output modes offer up to 5-lumens. The custom Wide Angle Optics lens provides 270° of visibility. 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. Available in front (15-Lumens), rear (5-Lumens) or sold as a pair.