AMBER/AMBER Emergency Hazard Warning Security 40 LED's Strobe Rooftop Magnetic Base Mount Traffic Advisor Light Bar 21-Inch Number of Panels: 10 LED Numbers: 40 with 15 kinds of flashing models (strobe and steady) Voltage: 12V Size (approx): 21.5 in () x 8.5 in () x 3.38 in (H) Package Content: 1 x Car LED Light Bar