ZITRADES&reg Sound Sensitive Control 3.3FT 2cm Width 6V Green Neon Glowing Strobing Electroluminescent Ribbon EL Tape Belt with super 3M tape EL Belt 1M long 2CM Width is Non-Toxic,Cold to the touch, very durable. With Sound Sensitiv sensor can adjust sensitivity by yourslef This Sound Sensitive EL belt picks up sound well when you have it near music or a speaker,the sensitivity can adjust by yourself. This Sound sensitive EL Belt uses DC6V or 4PCS AAA battery(not include) Excellent for custom case lighting, signs, decoration,Party, Bar, Disco and your home's Entertainment Room etc.