Polycom SoundStation2. Display: LCD, Display resolution: 132 x 65 pixels. Phonebook capacity: 25 entries. Frequency response: 300 - 3300 Hz, Dynamic range: 94 dB. Input voltage: 110 - 220 V, Input frequency: 50/60 Hz. Dimensions (WxDxH): 311 x 368 x 64 mm, Weight: 800 g