The Lezyne Hecto Drive 500XL/Femto USB Light Set is a compact, super lightweight pairing. The Lezyne Hecto Drive 500XL Front Light outputs an impressive 500 lumens.Hecto Drive 500XLCompact, durable cycling light with a machined aluminium body. It features built in cooling fins and cut-outs for side visibility. Its single LED design provides up to an impressive 500 lumens of output and eight output modes - including a Daytime Flash mode. Runtime has increased by 2.5 hours for up to 20 hours. Charging is simple with an integrated cable-free USB stick. It securely straps to a variety of handle bar shapes and sizes.Femto USB Drive RearCompact, 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 Hecto Drive 500XL/Femto USB Light Set FeaturesMax Lumens: 500 | 5 lumens.Weight: 84 | 23g.Max Runtime: 20 | 15 hours.Recharge Time: 2.5 hours.Lezyne Hecto Drive 500XL/Femto USB Light Set SpecificationsHecto Drive 500XLMax Lumens: 500 lumens.Weight: 84g.Max Runtime: 20 hours.Recharge Time: 2.5 hours.Femto USB RearMax Lumens: 5 lumens.Weight: 23g.Max Runtime: 15 hours.Recharge Time: 2.5 hours.