"The Whelen Engineering Guardian halogen mini lightbars feature 175 RPM rotators and a full-size diamond mirror that provides 700 flashes per minute. Flashes Per Minute 700, Housing Material Polycarbonate, Mount Type Permanent, Bulbs Per Light qty. 2, Dimensions L x W x H in. 17 5/16 x 7 x 6 1/4, Connector Type 12V DC, Power Cord ft. 1, Mounting Hardware Included Yes, Rotations Per Minute 175, Lights Included qty. 1, Light Type Halogen mini light bar, Light Color Amber. SAE J845 Class I certified amber 175 RPM rotators full-size diamond mirror provides 700 flashes/minute Precision wide-angle reflectors provide maximum intensity Quiet, reliable double ball bearing motor assembly Standard 12V DC Permanent mount"