This is a USB wired headset specially designed for office and call center communications. With dual microphones, HT301-U/HT302-U supports ENC noise reduction technology, delivering an immersive HD audio experience. The optimized ergonomic design, soft leather ear cushions and ultra-light weight provide all-day comfort for you to wear. Supports connection to Fanvil IP phones with USB interfaces, conventional third-party IP phones with USB interfaces, USB interfaces and PC devices. Dual microphone noise reduction: supports ENC ambient noise cancellation technology to reduce background noise in the environment, providing a crystal clear communication experience for the listenerHD audio: supports broadband HD audio, which is designed for calls and music. Supports anti-electromagnetic frequency interference and dynamic equalization function, which provides more vivid and rich audio quality. ALL DAY COMFORT - Ergonomically designed with soft leather ear pads and ultra-light. The 260o flexible pencil arm allows users to use it according to their preferences. GREAT COMPATIBILITY - Compatible with Fanvil IP phones with USB interface as well as major IP phones and third-party PC devices with USB interface. Fanvil Brand Model HT302-U Features - Adjustable Headphones - USB-A Interface -