Bang & Olufsen A8 are Earbud (In Ear) Ear-Hook headphones that deliver great listening experience. The frequency range covered by the model is 50 Hz - 20 kHz. With 19 ohms impedance level and 104 dB sensitivity, this pair of aluminium/black headphones produces authentic sound. In addition, the wired model comes with a cord which is 3.94 ft long. The headphones weigh 0.28 oz.