Fanvil Ht302-U Headphones are an ideal choice for call centers and offices. This wired USB headset from Fanvil combines ergonomic design and advanced technology. Dual microphones with ENC noise reduction support guarantee crystal clear sound. Soft leather ear pads and ultra-light weight provide comfort during long-term wearing. Key features include HD audio, adjustable microphone boom, two-color LED indicator and an in-line controller with answer/mute, mute and volume control buttons. The headset is compatible with PCs, IP phones and applications. A microphone with a frequency range of 50 Hz-8 KHz and a sensitivity of -42±3 dB, as well as a speaker with a range of 20 Hz-20 KHz and an input power of 10 mW will provide high sound quality. The cable length is 1.8 m. Operating temperature: -25~60 ℃. Colour: black.