Headphones - - earplugs, closed construction, 3,5mm Jack, frequency range: 25 Hz-17000 Hz, impedance: 16 Ohm, cord length of 1m The headphones model SE112 delivers premium sound and also an adequate quality. The headphones are exceptional thanks to their special design that can reduce up to 37 dB of noise from the surrounding. The sound isolation technology prevents any external audio stimuli to interfere with the enjoyment of your listening. Every ear is different, and therefore, there are 3 sizes of exchangeable ear buds included.Ergonomic design looks very professional itself, but there is also the presicion and the attention to detail which has to be noted. Cable does not interfere, because it is directed, unlike conventional headphones, upward and behind the ear. Low impedance guarantees higher battery life of any connected audio devices.