JVC HAEC10B Entry-Level Fitness Headphones • Sweatproof (IPX1) for sports and exercise;• 9 mm drivers for powerful sound;• Frequency response: 10 Hz to 20 kHz; 16 ohms impedance;• Wraparound, soft earclip design holds earbuds in place during physical activities;• 3.3 ft. cord with iPad/iPhone/iPod compatible slim plug;• Includes 3 pairs of silicone earpieces (S, M, and L);