Headset works great and has been tested for audio quality. The PLANTRONICS Poly SAVI W430 430 Headset is a wireless USB DECT 6.0 system phone with a single earpiece in black color. Manufactured in the 2010s, this earbud-style headset features Bluetooth wireless technology and built-in microphone for convenient hands-free use. With noise cancellation capabilities and UHF band, this Plantronics headset is designed for office communication systems, offering flexibility and comfort for extended wear.