UE Mini Boom Wireless Bluetooth Speaker - Black (Certified Refurbished) This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The resulting product includes all relevant accessories, comes with a minimum 90-day warranty, and may arrive in a generic box. Only sellers who meet a high performance bar may offer Certified Refurbished products on Amazon.com Huge Sound: UE MINI BOOM is the small speaker that delivers unexpectedly bold, jaw-dropping sound with crystal clear highs and deep bass Add a Second Speaker: Wirelessly connect two UE MINI BOOMs together in stereo via the UE MINI BOOM app to double up the awesomeness with even huger sound Better Wireless: Stream music from any Bluetooth enabled device from up to 50 ft.; 50% farther than most other Bluetooth speakers Music Everywhere: It is the perfect companion for your on-the-go lifestyle-ultra-compact design, simple controls and a crystal-clear speakerphone