The Lezyne KTV Rear LED Light is a fantastic choice for cyclists. It's a compact taillight that fits perfectly on aero - posts. With a lightweight, waterproof (IPX7 - rated) co - molded construction, it gives off up to 10 lumens of bright light. The Wide Angle Optics lens offers up to 270 - degrees of visibility, making you easily seen on the road. There are 5 different output modes to choose from, and it can run for up to 20 hours. And here's a great feature: it has a built - in USB stick, so you never have to worry about forgetting a charging cable. Max Lumens: 10. Max Runtime: 20 hours. Recharge Type: USB Stick. Weight: 45.3g. Dimensions: 64.7mm, 45mm, 38.9mm. Features: IPX7.

Using your Lezyne KTV Rear LED Light is a breeze. First, you can easily mount it on your aero - post. Then, press the button to switch between the 5 different output modes according to your needs. For example, if you're in a well - lit area, you can choose a lower lumen mode to save battery. When it's time to charge, just plug the built - in USB stick into a power source. It's that simple! As for maintenance, since it's IPX7 - rated, it can handle some water splashes, but try not to submerge it for too long. Keep it clean by gently wiping it with a soft cloth. And always store it in a dry place when not in use to ensure its long - term performance.