MULTI-COLORED LIGHTS Woofer glows in multiple colors and dances to the beat ONE-TOUCH️ USER INTERFACE Simple control knob for all sound adjustments ACOUSTIC OPTIMIZATION Select your venue and event to automatically adjust for the perfect sound BI-AMPLIFIED 500-WATT SOUND SYSTEM 15” (381mm) woofer, and 1” (25.4mm) tweeter deliver lifelike sound This pre-owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of Amazon Renewed, your destination for pre-owned, refurbished products: A customer buys a new product and returns it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by Amazon-qualified suppliers. Then, the product is sold as an Amazon Renewed product on Amazon. If not satisfied with the purchase, renewed products are eligible for replacement or refund under the Amazon Renewed Guarantee.