Headphones, microphones Hewlett packard H2500 Headset (Amber)

HP H2500 Headset. Device connectivity: Wired, Device interface: 2x 3.5 mm. Ear coupling: supraaural, Acoustic system: closed, Headphone sensitivity: 65 dB. Microphone frequency: 100 - 10000 Hz, Microphone connectivity: 3.5 mm. Weight: 0.113 kg. Volume control: Rotary