T Tocas 44 LED High Intensity Law Enforcement Emergency Flashing Lights Bar, Car Truck Construction Roof Mini Bar Strobe Lamp with Magnetic Base Last pattern recall / memorized function ! Weather-Proof IP67 With two buttons to on/off & switch between 7 modes, great for undercover or to use when needed Installation: Plug this into your 12V cigarrette lighter and with the magnetized bottom place on any exterior metal. Can be seen up to 1/2 mile Panel Dimensions: 17" ( wide ) x 9" ( deep ) x 3.25" ( height )/ Cable length: 10 FT Straight Cord/ Number of LED: 36/ Lifepan: 30000 hours Magnetic base that can be put onto any rooftop