Red & Blue Law Enforcement LED Magnet Strobe Light Box 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: 4.7" ( wide ) x 3.0" ( deep ) x 3.0" ( height ) / Cable length: ~9 FT / Number of LED: 48 / Lifepan: 30000 hours with just one switch to turn on and off, great for undercover or to use when needed Easy to install, Mounted with magnets to the top, and plug into a 12V cigarette lighter.