About the Lezyne Usb Femto 5 Compact, super lightweight USB rechargeable LED cycling taillight. 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 and the custom 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. Available in four colors: Black, Red, Blue, White. Also available as a pair. Key Features MAX LUMENS: 5 WEIGHT: 23g MAX RUNTIME: 15 hours RECHARGE TIME: 2:30 hours About Lezyne Lezyne was founded on March 1st, 2007, by industry icon (and German native) Micki Kozuschek. At a time when poorly engineered, plastic catalog-copied accessories were the standard, Lezyne\\\'s goal was to engineer and produce premium quality accessories that meet the same high standards as high-end bicycle components. In few words, Lezyne\\\'s goal was Engineered Design. Today, the goal remains the same and Lezyne is now a cycling accessories industry leader with award winning products worldwide. Innovative products like the CNC Floor Drive with its secure ABS chuck connection, the Carbon Road Drive with light-weight Full Carbon Technology, and multi tools using Center-Pivot bit design set Lezyne apart and ahead of the competition. lighting-buying-guides