Lezyne KTV Pro Alert Rear Light

The light uses an integrated accelerometer to detect deceleration. When you slow down, it automatically boosts its brightness to act like a vehicle brake light, alerting drivers and other cyclists behind you.

Yes, the mounting system is designed to be versatile and is compatible with both standard round seatposts and aero-profile seatposts.

With a maximum output of 75 lumens and wide-angle optics, it provides sufficient visibility for daytime use, though its primary strength is increasing your presence to traffic in mixed lighting conditions.

Absolutely. The light features an IPX7 water-resistance rating, meaning it is fully protected against immersion in water and will perform reliably in heavy rain or wet road conditions.

The battery runtime depends on the mode you select. In its most efficient flash mode, you can expect up to 19.5 hours of continuous use before needing to recharge via USB.

No tools are required. The light uses a flexible, integrated mounting strap that allows for quick and easy attachment to your seatpost.