Jabra Revo Wireless Bluetooth Stereo Headphones - Black/Gold (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 Jabra Sound app provides High Definition Dolby Digital Plus enhanced sound Unrivaled durability - bend tested and made for use while on the go Touch controls on the headphone turntable for easy music and phone call management Wireless or 3.5mm jack connector for corded option