Konftel 300W wireless conference phone. Phonebook capacity: 50 entries. Display: LCD, Display resolution: 128 x 64 pixels. Weight: 1 kg, Dimensions (WxDxH): 240 x 240 x 77 mm. Operating temperature range (T-T): 5 - 40 °C, Operating relative humidity range: 20 - 80 %. Talk time: 60 h, Standby time: 270 h, Battery capacity: 5200 mAh