Road riding in traffic rewards a rear bike light that stands out, and the SeeMee 150 V2 Rear Light projects up to 150 lumens from a compact COB LED body. The light mounts to either the saddle or the seatpost, and a 260 degree beam spreads the red around the bike. What Our Gearhead(R) Experts Are Saying:"Rolling up to stoplights, the brake sensor brightened the light the moment I slowed, and drivers behind me noticed the stop early. The light settled back to its set mode once I rolled on."