The Yealink monaural UH34 Mono is a professional USB wired headset with crystal clear audio. The UH34 offers a lightweight form factor that is comfortable to wear, even for an entire workday. It's suitable for workers who spend a lot of time wearing headsets for voice communications. Provided with Yealink USB Connect software and Yealink Device Management Platform/Cloud Service, you are easy to check the device information and upgrade the firmware of one or multiple UH34 headsets.