The GO Work headset features 45+ hours of Bluetooth playtime with the ability to connect to any 2 devices simultaneously. Includes dual microphones for clear calling, a quick mute indicator, multi-functional buttons for controls, and the ability to choose between 2 EQ settings: Work or Music mode. Headphone Features Long 45+ hours of playtime with Bluetooth multipoint for mobile/PC/Mac, or plug-in to your PC or Mac directly with included cable. Multipoint technology allows you to connect to any 2 devices simultaneously and remember up to 10 devices. C3 Calling uses dual microphones for crystal clear phone calls Rotating boom microphone includes red LED light as a quick mute indicator Headphone Return Policy: No refunds or exchanges allowed on open products.