Core Features: Seamless handover and roaming Rugged DECT handset with IP67 protection rating Antibacterial design scratch-resistant disinfectant-resistant 2.4 240 320 TFT color screen with intuitive user interface HD voice and FNR (Flexible Noise Reduction) Built-in Bluetooth 5.2 Vibration alarm Alarm functions for occupational safety: push-button alarm no-movement alarm man-down alarm and running alarm Up to 28-hour talking time (in ideal conditions) Up to 320-hour standby time (in ideal conditions) Keypad backlight and keypad lock Fully compatible with Yealink Single-Cell W70B and W75/W80/W90 Multi-Cell System for seamless roaming and handover