Approx APPHS05O. Device interface: 2x 3.5 mm, Cable length: 2.5 m. Ear coupling: supraaural, Headphone frequency: 15 - 20000 Hz, Impedance: 32 Ом. Microphone frequency: 30 - 15000 Hz, Microphone sensitivity: 58 dB. Weight: 88.5 g