Bright White 240-led Dash Warning Emergency Truck Strobe Light Flashing Mode #71W Includes: 1x Strobe light unit Installation: Plug this into your 12V cigarrette lighter and with the magnetized bottom place on any exterior metal Panel Dimensions: 11.75" ( wide ) x 6.2" ( deep ) x 2.8" ( height ) / Cable length: ~7 FT / Number of LED: 240 / Lifepan: 30000 hours With a just one button to switch between 7 modes, great for undercover or to use when needed Easy to install, Mounted with magnets to the top, and plug into a 12V cigarette lighter.