Display: 1.8-Inch 128x160 TFT color screen, Speaker: Full-duplex speakerphone, Call history: All/Placed/Missed/Received (up to 100 entries), Color: Space Gray, Update: OTA (Over-The-Air) upgrade, Warranty: 01 Year Limited Warranty. Supporting registration with up to 10 Yealink W73H DECT handsets, the W73P system is launched with robust processing capacity for up to 10 SIP accounts and 20 silmultaneous calls. More flexibility and mobility could be enabled through up to 6 optional repeaters for extended network coverage.