The Yealink WH66 DECT Wireless Headset is a headset with dual connectivity for professional unified communications. It supports both DECT wireless technology and USB connection, providing flexibility for use with desk phones, computers, and mobile devices. The headset features active noise cancellation with two microphones to reduce background noise, ensuring clear audio quality during calls. It includes a charging station with 100 hours of standby battery life and up to 15 hours of talk time. The over-ear design with an adjustable headband and soft ear cushions ensures comfort during extended wear. Compatible with leading UC platforms such as Microsoft Teams, Zoom, and Cisco Webex, it supports wideband audio for high-quality sound. The headset offers a wireless range of up to 50 meters indoors and has a mute function as well as volume controls on the ear cup. Weighing 180 grams, it is lightweight and durable, suitable for office environments. The package includes the headset, charging station, a USB cable, and documentation. This model is the successor to previous Yealink Wireless Headsets with improved connectivity and battery performance.