A Certified Refurbished product is one thats been returned to Bose, for any reason. Its then thoroughly inspected, tested, and serviced to meet strict Bose sound quality standards - the same as a new product. Appearance is closely examined; products occasionally have minor, nearly imperceptible blemishes. All Refurbished products have the same warranty as new products, and are available only from Bose. Quantities are limited. - Headphone Fit: Around Ear, Around Ear Circumaural. Headband: On Head Adjustable. Cushions: Removable Cushion. Microphones: 4 Microphones for Voice, 6 Microphones for Active Noise Cancelling, Built-in Microphone. Noise Control Type: Active Noise Cancelling - Bose Noise Cancelling Headphones 700 - Audio cable - USB-C charging cable - Carrying case - Quick start guide