Audio Technica ATH-ANC9 QuietPoint Noise-Cancelling Headphones (Certified Refurbished) This Certified Refurbished product shows limited or no wear, and includes all original accessories plus a Manufacturer warranty. QuietPoint active noise-cancelling technology reduces environmental noise by up to 95% Tri-Level Cancellation - 3 noise-cancelling modes customize performance for airplane, office, & study 40 mm drivers for crystal-clear high-fidelity audio reproduction Luxurious memory foam padding on headband and earcups