Dynamic, closed in-ear headphones ideal for mobile use. They have a strong and balanced sound, excellent sound isolation from the environment, metal housing, Neodymium HD acoustic drivers, frequency response 10 – 25,000 Hz, impedance 47 ohms, sensitivity of 107 db, and 0.3 m flat cable. Connection: angled 3-pole mini jack plug (3.5 mm). Accessories: adapter plug for two in-ear headphones. extension cable 0.9 m, seven pairs of silicone eartips, 1 pair Comply T-400 foam eartips (size M), cable clip and bag. Color: black.