Mitel 50004310 5235 IP Large Display Speakerphone (Black/Refurbished)Key Features: Large high contrast monochrome, graphic, backlit, touch display (340x280 pixels) Provides users with real time access to applications and services such as web browsing, directory management, and visual voicemail 24 programmable self labeling touch screen keys (line appearances, speed dials, feature access) presented in either two pages of 12 keys or three pages of eight keys Eight fixed function keys: Speaker, Volume Contrast Up Down