Light & Motion's Vis 180 is their brightest taillight. It boasts efficient LEDs putting out 50 lumens of brightness, plus it shines in 180 degrees for top visibility thanks to its amber side lights. It also offers 4 modes for up to 20 hours of run time, a built-in lithium-ion battery and a no-tools easy on/off mount. And it's USB charged and has a low-battery indicator so you stay safe.
Run time: 4/6/12/20 hours (High/High Pulse/Low Pulse/Paceline)
Weight: 102 grams
Using the Vis 180