Yealink W59R, certified to rigorous IP67 standard, is a professional ruggedized DECT handset with integrated Bluetooth and vibration alarm that is equipped for harsh environments where there may be dusty, humidity and drops. Fully compatible with Yealink W80 Multi-Cell System for seamless roaming and handover. As a rugged and durable handset, W59R has also been developed with Yealink optimal HD audio quality that combines multiple leading technologies together, including FNR (Flexible Noise Reduction), full duplex, and Opus. This means users can get a stable and high-quality audio experience even when in a noisy environment or encountering wireless interference. The complete alarm functions and integrated G-Sensor boost occupational safety for persons working in hazardous locations.