Poly wired headset BlackWire 3310 connection single ear noise canceling (old model) USB-A

We offer a wide variety of products, and the following precautions apply to some of them. Please note that they are listed for all products. 【Voltage Compatibility】Designed for Japanese voltage (90-110V). Using with a different voltage may cause malfunction. 【Plug Type】Japanese plugs (A or B type). Use a conversion adapter if needed. 【Transformers & Adapters】Transformers adjust voltage; adapters only change plug shape. Using an adapter without a transformer may damage the product. 【Liability】We are not responsible for damages caused by improper use, such as using the product without a transformer. USB-A terminal connection model Equipped with noise canceling microphone Sound limiting function protects your ears from sound levels exceeding 118 dBA. Can be worn on either the left or right ear by rotating the microphone part Microsoft Teams authentication model