IMAGE 90x25cm Car Auto Music Beat Rhythm LED Glow Lights Lamp Sound Activated Equalizer Sticker It is a layer of soft and thin sheet be stick on rear windshield, side window, or wherever you feel appropriate. Use driving equipment, plug it to 12VDC power, it can produce beautiful effect. Sheet thickness is only 0.35mm, it is very space saving. Low power consumption: only 1mW per spare centimeters. Along with the voice / sound changes. Power: DC 12V Size: 90cm*25cm (35.5"X9.9"). Color: Like the Photo Show