Poly Blackwire 5220 Wired Binaural Headset with Boom Microphone Compatible with Connection 7S4B3AA PC/Mac/Tablet/Mobile USB-A/3.5mm

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. Simple connectivity: Use with a variety of devices as a wired headset that connects to your PC or Mac using a USB-A cable, or to your phone using a 3.5 mm connection jack. Superior sound quality: Noise-canceling microphone cuts out surrounding sounds to ensure that you can be heard clearly. Audio automatically switches between your phone's wideband and Hi-Fi stereo for music. SoundGuard DIGITAL technology also protects your hearing from loud volumes, sudden loud noises, and prolonged exposure. All-day comfort: Memory ear cushions wrapped in ultra-soft synthetic leather provide all-day comfort. The durable, lightweight headband is adjustable for a comfortable fit. Enhance collaboration: USB headsets with microphones are plug-and-play compatible with major collaboration platforms including Microsoft Teams and Zoom. Easy to use: Manage your calls with intuitive inline controls for answering/ending calls, adjusting volume, and muting. The included carrying case makes it easy to store and transport.