Simple and Flexible Connectivity Runs right out of box, a USB plug-and-play setup makes the connectivity to PC. You can enjoy a reliable call experience with soft clients. Perfect match with Yealink IP phones give you optimized audio quality. Ultra-lightweight, All Day Wearing Comfort Built for comfort with soft ear cushions and ultra-lightweight materials, the UH34/ UH34 Lite is 10%~30%* lighter than other headsets in the same range. Its ergonomic design makes this headset comfortable enough for long conference calls and all day use. (* Test data provided by Yealink Lab) Unparallel Audio Experience Made for calls and music, UH34/UH34 Lite is kitted out with a high signal-to-noise ratio speaker and independent cavity design. The passive noise cancellation creates a richer and clearer conversations with reduced background noise. Intutive Controller The hand-held controller with LED indicator provides easier access to key call control capabilities, including answer call, end call, reject call, and mute/unmute.