The Yealink BH71 eliminates 90% of background noise from your end of the call by applying 4-Mic array beamforming noise cancellation. So you'll sound crystal clear whether you're traversing busy metropolitan streets or are surrounded by raucous crowds. Feel free to continue the conversation away from your mobile phone with a wireless range of up to 40m. Maintain stable connections and deliver crystal-clear voice even in strong inteference workspaces.