Tiptel ergoVoice CR. Display resolution: 24 x 115 pixels. Weight: 850 g, Dimensions (WxDxH): 235 x 215 x 85 mm. Compatible operating systems: CE. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -5 - 70 °C. Power supply type: AC 16 V 300 mA, Battery type: AAA