Bluetooth: Bluetooth CLASS 1, 300m standard, 4 channel capability (simultaneous) with genuine Windows Bluetooth stack (driver) or Widcomm Bluetooth stack (driver).Avast Pro Antivirus / Internet Security / Premier. Windows 7 Ultimate Sp1 圆4 En-Us ESD Nov2017 Pre-Activated. Operating system: WIN 7 (SP1) 32 oder 64 bit, WIN 8.1, WIN 10.Before you download, please see below: Minimum requirements at the hardware: