Customer Ratings & Reviews

This is a really great device. It is very accurate at letting you know when a car is coming up from behind as well as how far it is and how fast it is coming. It also lets you know on the greenway when a bike is coming up from behind but sometimes doesn't give you as much advanced notice as it does with cars on the road.

I purchased this because my friends have them - and they were correct. This has really helped on long rides. Cars, numbers, distance, even colors based on the speed. I chose the 315 because I have plenty of rear lights. The right position for me. My only gripe is battery life is "meh". Usually recharging 2-3 times / week. Highly recommend.

Works great. Tells me when a vehicle is approaching and how many.

it was cool thanks it was nice thanks it was cool christmas thanks