The Yealink WH66 DECT Wireless Headset (WH66 MONO UC) is a professional communication device designed for office environments that require reliable audio performance. This mono headset features advanced DECT 6.0 wireless technology, providing a stable connection with a range of up to 180 meters outdoors, ensuring freedom of movement during long work sessions. The headset delivers crystal-clear sound with noise-canceling microphone technology that effectively reduces background noise for improved call clarity. Weighing approximately 150 grams, the WH66 offers comfortable wear for all-day use with its adjustable headband and soft ear cushion design. The device supports multiple connectivity options, including USB-A for direct computer connection and Bluetooth for pairing with mobile devices, allowing seamless switching between communication platforms. The battery life provides up to 12 hours of continuous talk time and 120 hours in standby mode, with a quick charge feature that delivers 2 hours of use after just 15 minutes of charging. The headset includes intuitive controls for volume adjustment, call management, and mute functions, conveniently positioned on the ear switch. Compatible with all major unified communication platforms and softphone applications, the WH66 is designed for professional use in call centers, office environments, and remote work settings where reliable audio quality and wireless convenience are essential.