Genius HS-200A. Device connectivity: Wired, Device interface: 3.5mm, Wireless range: 2 m. Headphone frequency: 20 - 20000 Hz, Impedance: 32 Ом, Headphone sensitivity: 103 dB. Microphone frequency: 100 - 10000 Hz, Microphone sensitivity: -38 dB. Weight: 42 g