Snopy SN-746. Device connectivity: Wired, Device interface: 2x 3.5 mm, Connector contacts plating: Chrome. Ear coupling: supraaural, Acoustic system: closed, Headphone frequency: 20 - 20000 Hz. Microphone frequency: 30 - 16000 Hz, Microphone sensitivity: -5 dB, Microphone input impedance: 2200 Ом. Cables included: AUX. Volume control: Rotary