[ Multiple Upgrade ] : Adopting wireless design, powered by 2* AA battery (Not included), getting rid of issue stuck with many cord in car and making your car tidier; Equiped with RGB 5050 bead,which is brighter and longer lifespan; Using Bigger suction cups with screw to make sure keep in place well; Multi-color & modes are available,including static red,green, blue, cyan, pink, dynamic gradient, oscillation, flash, meeting your different needs, [ An Absolute Breeze Install & Using ] : Just need to tighten the screw of suction cups to fix it on the hole, then add battery, then press it onto the inner windshield (please wipe window with wet cloth before install for better adhesion). Press ON/ OFF button to start it and switch button to change the modes, [ What You Get ] : 1* Car LED sign light, 2* suction cups, 12 month warranty and lifetime customer support. [Make Your Car More Recgonizable ] : Bright and crisp lighting effect makes customers find you even in fog, rain and dimly lit area instantly, providing them safe and cool experience to be reflected positively from them. [ Warm Indication ] : Please don't install it on the bent of windshield for better adhesion and if you find its button is not fast to operate and memory function doesn't work, means electricity is low, please change a new battery for them.