Alpena 78312 Strobe Postz - White features 12-Efficient, bright LEDs are incorporated into a compact, pivoting case that makes it great for stealth installs. A powerful, pure white output is controlled by a multifunction power supply that adjusts the strobe speed, patterns, and toggles power. Each unit adheres to almost any surface with the included easy, peel-and-stick 3MT foam tape. Powered by almost any 12-Volt source they are easily installed with the included high-quality 3M tape. The Strobe Postz is ideal for both safety and style. At Alpena, we push auto fashion forward and ensure the best quality and value.