With a 5 lumen output the Lezyne Femto USB Drive Rear Light is perfect for commuters and recreational riders looking for a simple and inexpensive way to add visibility.Co-moulded construction with IPX7 water resistance ratingFive output modes offer up to 5 lumensMicro USB rechargeableRecharge time of 2.5 hours with maximum run time of 15 hoursLightweight at only 23gThe Femto USB Drive features a durable co-moulded construction that has an IPX7 water resistance rating so you can safely use it in wet conditions. A versatile mounting strap quickly mounts to a variety of bar sizes. Five output modes offer up to 5-lumens and the custom Wide Angle Optics lens provides well over 180° 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.