Core Features: Rugged Dect Handset With Ip54 Protection Rating, Scratch Resistant, Disinfectant Resistant, 1.8 128 X 160 Tft Color Screen With Intuitive User Interface, Hd Audio And Flexible Noise Reduction (Fnr), Vibration Alarm, Up To 40-Hour Of Talk Time, Up To 575-Hour Of Standby Time, Keypad Backlight And Keypad Lock, Fully Compatible With Yealink W80/W90 Multicell System.