Woosung Traffic Safety Arrow, with Neodymium Magnets and LEDs. 19.6 Inch Arrow for Night-Time, Low Visibility Accidents on the Road. Warn Others with this Hazard Emergency Flare AVOID the Secondary Car Accident by Directing Traffic Away with this Emergency Beacon. ONE BUTTON Operation as a Hazard Flasher for Traffic Control, Parking Guide, Emergency Signaling LED Baton, and more. SAFE No Need to Leave the Vehicle, as the Base has a Magnet which can Mount to the Hood of the Vehicle 24 LED Bright Red Bulbs with Dual Flashing Modes: Blinking and Steady-Glow. Powered by 2 AA Batteries with up to 8 hours of Operation. VISIBILITY up to 500M at Night; 300M at Day. The size: 19.6" x 1.7" x 1.7".