Polycom CX700 IP PHONE. Display: TFT, Display resolution: 320 x 240 pixels, Display diagonal: 144.8 mm (5.7 "). Frequency response: 30 - 20000 Hz, Dynamic range: 80 dB, Total Harmonic Distortion (THD): 0.08 %. Power consumption (typical): 13 W. Dimensions (WxDxH): 252.7 x 91.3 x 268.6 mm, Weight: 2.1 kg, Handset weight: 0.2 kg. Operating temperature range (T-T): -10 - 40 °C