The Lezyne KTV Drive/Femto USB Light Set is a compact cycling safety light set with two bright LEDs and a 200-lumen Daytime Flash mode.The front light is a compact cycling safety light with two bright LEDs and a 200-lumen Daytime Flash mode. It features a super lightweight, yet durable co-moulded construction that is IPX7 (waterproof) rated. NEW -- Up to 20 hours of runtime (eight-hour increase) and up to 200 lumens (20-lumen increase) of output. And it features an integrated USB stick for convenient cable-free recharging. The KTV Drive Front offers five output modes.The rear light is a compact, super lightweight USB rechargeable LED cycling taillight. Its durable co-moulded 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 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. The Femto USB is perfect for commuters and recreational riders looking for a simple and inexpensive way to add visibility.Lezyne LED KTV Drive/Femto USB Light Set BlackFrontMAX LUMENS: 200WEIGHT: 47.5gMAX RUNTIME: 20 hoursRECHARGE TIME: 3 hoursRearMAX LUMENS: 5WEIGHT: 23gMAX RUNTIME: 15 hoursRECHARGE TIME: 2:30 hours