Philips SHM3560. Device connectivity: Wired, Device interface: 3.5 mm, Cable length: 2 m. Acoustic system: semi-open, Headphone frequency: 20 - 20000 Hz, Impedance: 32 Ом. Microphone sensitivity: -45 dB. Weight: 50 g. Cable type: Copper, Depth: 30 mm, Height: 160 mm