2 pairs included. Lightweight. Open sound. Contoured comfort fit. Contoured Design: Delivers a natural and comfortable fit. 2 pairs of superior sound quality earbuds. Product features and specifications are subject to change without notice. Product may vary from images shown. The original since 1958. - John C. Koss, Founder. Hearing is believing. The Sound of Koss: 3.5 mm; 4 ft (1.2 m); 60-20 kHz; 16 ohms; 96 dB SPL. Limited Lifetime Warranty: If purchased outside US, contact the local Koss Authorized Dealer for details. CE listed. www.koss.com. Made in China. Printed in China.