Specification: Item type: TAXI LED Sign Board Size: Approx. 19*6.3cm/7.48*2.48in Light source: LED Light Color: Red and Green during open/close Light type: Light Panel Lifespan: 20,000 hours Design: TAXI Sign Power supply: DC5-6V with USB Switch Installation:Easy hook on and off with suction cup remain on the windshield. Tips:Dripping a little bit of water, can help you let the suction cups adsorb to the card and glass better. Package included: 1x TAXI Car LED Sign 2x Suction Cup Bright Lights Glow—Whether it is day or night, your customer will see your car immediately, High quality Led Sign Light make your car stand out in traffic. Power Supply --- DC 5-6V with USB Switch, suitable for all 12V cars. 2 Color Light Source --- LED Light Panel, Bright and Soft Blue and green light, you can change the color you want, High performance in fog or rainy weather. Easy installtion---Easy hook on and off with suction cup on the windshield. Dripping a little bit of water can help you let the suction cups adsorb to the card and glass better. Better Driver Ratings: Make it easier for customers to find your car,especially in crowded pick-up points.It's easy to bring you an order.