Laser Light Bicycle Taillight

This bicycle taillight is made of PVC shell, LED light inside. There are three LED lights and two laser lights, LED lights in the middle, laser lights on sides. There are three models of the light. Click the button once, it will light up always, click again, it will flash fast, and click third, it will flash slowly, and click fourth, it will turn off the light. It will work with 2 pcs AAA batteries, but it do not come with the batteries. 2 3/4" L x 3 1/8" W x 1 3/8" H