Led Bike Lights

I will come to the Jist. I am researching the technology and I'm in real trouble. I need to know thingsm such as: what kind of models there aree? how do they work? What is the most popular genre? I also appreciate the songs more information. Thank you!

LEDs are smaller, lighter, and less expensive to run, and emit a strong beam. They also have less heat than conventional bulbs to Abd last much longer.