Typhoon VoIP USB Phone. Bundled software: Skype. Weight: 100 g, Dimensions (WxDxH): 120 x 50 x 17 mm, Cable length: 1.91 m. Compatible operating systems: Microsoft Windows 2000 / XP, Minimum system requirements: USB v1.1, Minimum RAM: 128 MB. Operating temperature range (T-T): 10 - 40 °C, Operating relative humidity range: 10 - 95 %