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 product ships with all relevant accessories, a minimum 90-day warranty, and may arrive in a generic box. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon.com;Harman Kardon Signature Sound - refined, full-bodied sound with rich bass;Retractable Ear Buds - an intuitive wire management solution with a comfortable, customizable fit;Quad-Layer Speaker Technology - balanced audio and less distortion;Dual MEMS Microphones - delivers exceptional voice call clarity for uninterrupted conversations