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Description: With the big size LED music spectrum design, it can show the excellent effect of the sound wave. This spectrum uses general USB interface, DC 5V power supply. All USB interface equipments, including computers, mobile phone charger, mobile power supply, etc., can provide power to the LED spectrum. Great DIY audio spectrum gives you an unprecedented listening enjoyment! Specifications: Power Supply: 5V USB Audio Signal Input: 3.5mm / 0.14in Board Size: 8.5 * 23cm / 3.3 * 0.9inch Material: Acrylic Package Weight: 300g Package List: 1 x DIY LED Digital Music Spectrum Set Kit with Shell and Some Screws 1 x 2-in-1 Audio + USB Cable