18 Blue LED Law Enforcement Use Strobe Lights For Interior Roof / Dash / Windshield Includes: 1x 18 LED unit / 1x Hanging bracket / 1x Cigarette lighter adapter / 3 x Suction cups / All the screws for installation Installation: Plug this into your 12V cigarrette lighter Panel Dimensions: 4.4" ( wide ) x 3.5" ( deep ) x 2.0" ( height ) / Modes: 3 / Lifepan: 30000 hours 3 Different modes of strobing / flashing, You should not use this as a primary strobe light, but as a backup due to the small unit it wont be as bright Easy to install, screw on the brackets, place the suction cups into the bracket, and plug into a 12V cigarette lighter.