Headlights come with super-bright C4® LEDs for superior light performance. They also have 90° tilting heads as well as rubber hard hat and elastic head straps. And they all sequence through their individual modes with push-button switches. Other features include polycarbonate lenses, long-range beams, and wide flood patterns. Use three AAA batteries (included). IPX4 water resistant. 1 7/8"H x 2 9/16"W x 2 1/2"D. https://youtu.be/Omp_CyEjnio