The HP Poly Blackwire 3320 headset is designed to provide excellent audio quality for calls. Its wired connectivity ensures lag-free audio, while the 20Hz to 20kHz frequency range provides clear, balanced sound. A flexible microphone boom and 180-degree pivoting speakers offer enhanced adjustability for achieving professional voice clarity. | HP Poly Blackwire 3320 On-Ear Noise Cancelling Headset - Black