Poly Blackwire 5220 Wired Stereo Headset with Boom Mic, PC/Mac/Tablet/Mobile Compatible, USB-A/3.5mm Connection, 7S4B3AA Simple Connectivity: This wired headset can be used with various devices, connecting to PCs and Macs via a USB-A cable, or to mobile phones using the 3.5mm connection jack. Excellent Sound Quality: The noise-canceling microphone cuts out surrounding noise, ensuring the speaker's voice is clearly transmitted. Audio automatically switches between wideband for phone calls and Hi-Fi stereo for music. SoundGuard DIGITAL technology also protects hearing from loud sounds, sudden loud noises, and prolonged exposure. All-Day Comfort: The memory foam ear cushions, wrapped in super-soft faux leather, provide all-day comfort. The durable and lightweight adjustable headband ensures a comfortable fit. Enhanced Collaboration: This USB headset with a microphone is compatible with major collaboration platforms such as Microsoft Teams and Zoom, and is plug-and-play ready. Easy Operation: Intuitive inline controls make call management easy, allowing you to answer/end calls, adjust volume, and mute. The included carrying case makes it easy to store and carry. - Purchased for work and used a few times. Overall, it's in good condition. Operation confirmed! Thank you.