WX-E @ 19 Keys Financial Accounting Mini Numeric Keypad 2.4G Wireless Digital Keyboard Numeric Keypad for Laptop Mini 2.4G Wireless 10m work distance numbpad keypad keyboard 2.4g wireless numeric keypad System Requirements: IOS, Windows XP, Windows Vista or Windows 7, USB port; Dimension: 140.64*86.02*25.67mm Scissors Truss Structure