Nsstar 8 LED Law Enforcement Use Strobe Lights for Interior Roof / Dash / Windshield (Blue&Blue) Installation: Plug this into your 12V cigarrette lighter Panel Dimensions: 7.87" ( wide ) x 3.94" ( deep ) x 1.97" ( height ) / Modes: 3 / Lifepan: 30000 hours 3 Different modes of strobing / flashing with generation 3 LED which are brighter and more visible during the day Easy to install, Brackets and suction cups preinstalled, and plug into a 12V cigarette lighter.