Lezyne KTV Pro+ Ai Alert Rear Light

Looking for a Lezyne KTV Pro+ Ai Alert rear light for your bike? The Ai Alert sensor detects braking and changes mode: in alert mode, the light switches to 150 lumens, drawing the attention of those behind you when you slow down. It is not StVZO approved, so check your country's rules before using it on the road.

The seven modes range from Femto at 5 lumens, with a runtime of 20 hours, to Day Flash at 150 lumens for daytime visibility. There is also Economy at 10 lumens. The composite body is IPX7, mounts to aero or round seatposts and charges via an integrated USB stick. The battery is 400 mAh and the weight is 50 g.

Founded in 2007 in San Luis Obispo, California, by Micki Kozuschek, Lezyne is now based in Reno, Nevada. It makes pumps, lights, multi-tools and bags to accompany cyclists on their rides. In 2011, it began developing its own LED lights.