Signstek Sound Music Beat Activated Car Stickers Equalizer Glow Blue LED Light Audio Voice Rhythm Lamp this amazing sound activated is a layer of soft and thin sheet be stocked on rear windshield side window, or wherever you feel appropriate. it is furnished with double faced adhesive tape and covered with a protective membrane, you can remove membrane and stick to back windshield. moreover, if there is a trouble for you to connect the wires in the car, you can demand to equip a lighter for cigarette instead, the lighter can be directly inserted into car to make lamp lightening. features as smart as it can dance to music it has a built in graphic equalizer, which are moving according to the background sound (similar to a normal equalizer). different music or sound volume will activate a different equalizer panel, so you can adjust its sensitivity to pick up different dancing sticker. space and energy saving its thickness is only 0.35mm and can be roll up to store. and it only takes 1mw per spare centimeters, saving energy as much as possible for you. beautiful blue light at night when driving at night, this sticker can be flashing in blue cool light, which makes your car safe and beautiful. it is fun, fresh and modern to decorate this dynamic car sticker on your rear windshield or side window. easy installation 1. stick the sticker on rear windshield or side window inside the car via double faced adhesive tape. 2. connect the adapter to the sticker gently using a 3m converter cable 3. plug the cigarette lighter into car 4. start the music specificationscondition: brand new size: 45cm x 11cm inverter cable length: about 3m cigarette cable length: 1.2m led light color: blue voltage: dc 12vpackage:1x car sticker1xcigarette lighter1x battery box1xcable