Premium USB Headset One Headset, Dual Connections, More Possibilities The Yealink UH38 USB Wired Headset Series, including Mono & Dual two styles, is the premium level USB headset with peerless innovative designs and technologies, tailored for all office users and remote workers with a stably immersive voice experience. From voice quality to connection availability, from wearing comfort to calling features, UH38 all strives for excellence to create more inspiring moments for empowered professionals Dual Connections Bridge your daily devices into one Industry pioneering dual connection design, available for both USB and Bluetooth connection simultaneously, delivers an immersive and coherent voice experience for all users during working. Instead of frequent switches between phone or PC, easily answer and manage your call through dual connection. Dual Noise-Canceling Microphones Instant peace for you and the one you talk to Applied Acoustic Shied Technology*, dual noise-canceling microphones of UH38 show outstanding call performance even in high-pressure and noisy office environments, allowing you to hear and be heard with world-class audio quality. Dual Voice Modes Make them different to sound both excellent Tailored for both daily scenarios of calling and music, UH38 is featured with dual voice mode and automatic switch with a powerful leak-tolerant speaker and cutting-edge audio algorithm identification to ensure the high fidelity and the best experience of audio.