Femto USB Drive FrontCompact, super lightweight USB rechargeable LED cycling safety light. Its durable co-moulded construction is minimal and has an IPX7 water resistance rating. A versatile mounting strap quickly mounts to a variety of bar sizes. Five output modes offer up to 15-lumens and the custom Wide Angle Optics lens provides well over 180° of visibility. The Femto USB Front can run for up to 20 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 colours: Black, Red, Blue, White. Also available as a pair. Key Features:Max Lumens: 15 lumens.,Weight: 22g.,Max Runtime: 22 hours.,Recharge Time: 2.5 hours.,Colours: Black, Red, Blue or White..