The highly rated Bose QuietComfort Ultra noise canceling wireless headphones just dropped over half off in price. Note that this is the first generation QuietComfort Ultra. Certified Refurbished With 2 Year WarrantyAbout Bose Refurbished products Bose Certified Refurbished products are thoroughly inspected, tested, and serviced to meet strict Bose sound quality standards – the same as a new product. The QuietComfort Ultra is Bose's highest-end noise-cancelling headphone (this is the gen 1 model). The Ultra is a significant upgrade over the standard QuietComfort headphones both in terms of audio and noise-cancelling performance.