Seamless handover and roaming Rugged DECT handset with IP67 protection rating Scratch resistant, disinfectant resistant 1.8' 128x160 TFT color screen with intuitive user interface HD voice and FNR (Flexible Noise Reduction) Built-in Bluetooth 4.2 Vibration alarm Alarm functions for occupational safety Up to 28 hours of talk time (18 hours with Bluetooth headset) Up to 360 hours of standby time (200 hours with Bluetooth headset) Keypad backlight and keypad lock Fully compatible with Yealink W80 Multi-Cell System/Single-Cell W60B for seamless roaming and handover