Sennheiser PX 685i SPORTS. Interface type: 3.5 mm, Cable length: 1.2 m. Ear coupling: intraaural, Headphone frequency: 18 - 20000 Hz, Headphone sensitivity: 120 dB. Microphone frequency: 100 - 10000 Hz, Microphone sensitivity: -44 dB. Package weight: 0.183 kg. Packaging height: 165 mm, Packaging length: 178 mm, Packaging width: 48 mm