Canyon CNR-HS9. Device connectivity: Wired, Device interface: 3.5mm, Wireless range: 2.4 m. Headphone frequency: 20 - 20000 Hz, Impedance: 32 Ом, Headphone sensitivity: 105 dB. Microphone frequency: 30 - 16000 Hz, Microphone sensitivity: -58 dB. Weight: 0.171 kg