Portland Design Works' Fenderbot Taillight shines brightly to enhance your visibility when the sky turns dark. It boasts a 1-watt LED with three modes and precision reflector to notify others of your presence. And, the Fenderbot bolts directly to your fender so it's always on your bike.
Run time: 30 hours (flashing); 15 hours (steady)
2 AAA batteries are included
Real-life light test
Radbot on the roadways