2 Pack - Flashing LED Auto Parking Signal - 4ft Tall Post 2 Pack - Flashing LED Auto Parking Signal 4 ft Tall Post with Ultra-bright LED light, requires 2 "AG13" Button cell Batteries (Included) Sign Pulsates with flashing light when tapped by vehicle's bumper Sturdy nonslip base with folding extenders for stability Assembly required, 12 3/4" in L x 12 3/4" W x 51 1/2" H