Dynamic EQ for music and phone calls, Plantronics Blackwire 7225: 127 dB ±1.5 dB, four omnidirectional microphones, -26 dBFS +/- 3dB, 100 Hz – 10 KHz, universal USB-A, CALL CONTROLS: volume, mute, and answer/end MEDIA CONTROLS: Plantronics Hub for Windows/Mac, 0.34 lbs/5.5 oz/155 g, mute, play, pause, track forward, and back. The Plantronics Manager Pro suites include Health & Safety, Call Quality & Analytics, Asset Management & Adoption, One-year guarantee