Easy use: no drivers or batteries are required, USB connection, Just Plug-and-Play. | Efficiency: Full-size 19mm keys improve speed and accuracy.It is an ideal choice for spreadsheet accounting and financial applications. | Soft touch: Integrated ergonomic tilt provides added comfort which helps reduce strain, great for those working on spreadsheets, accounting files or financial applications. | Compatibility: Works with PC and Desktop computers that have Windows 2000, XP, Vista, or Windows 7 operating systems. | Durable work: Numeric keypad supports NumLock, and is made of ABS which is durable.