Vehicle-mounted Arrow Board Water proof,No.1battery with 24 hours life SPECIFICATIONS:Size:L650*W430mmVoltage:DC12V, DC24VVisual Diatance:>1000mFEATURES:1.OEM is welcome.2.Safe, reasonable design. Deft appearance , Convenient usage.3.Corrosion resistance, aging resistance, long service life4.High strength, not easy bending, anti-shock capability5.Cheap, beautiful appearance, Smooth in back and ...