Yealink W73H. Product type: IP mobile phone, Product color: Black, Handset type: Wireless handset. Maximum indoor range: 1968.5" (50 m), Maximum outdoor range: 11811" (300 m). Lines quantity: 2 lines, Phonebook capacity: 100 entries, Frequency band: 1.9 GHz. Display: TFT, Display diagonal: 1.8", Display resolution: 128 x 160 pixels. Networking standards: IEEE 802.3af