Reverse LED Light with Speaker. Once wired to power source, when reversing your vehicle, the LED will beep and flash in unison for warning. 12 VDC. Has an audible beeper that beeps when in reverse. Designed with mounting stand, adhesive sticky on the stand, loose wire, clear lens, 8 LEDs and speaker. Approximate size is 2.14in x 3.20in x 2.02in.