Solar Arrow Board Trailer---Two Year Quality Warranty Solar arrow board,traffic sign board,traffic board,traffic trolley,traffic trailer Model:YT-0525 Screen dimensions:Trailer height:Number of LED bulbs:25 Diameter of bulb:100mm Runtime:under rainy weather over 200 hours after the batteries full charged Visibility distance:>1000m Solar panel power:50w Battery:12V/50Ah,lead-acid battery