Wireless connection distance: 32.8 ft. The numeric keypad provides an effective wireless range that lets you place it where it is most convenient without cables. Compatibility: Broad support for Windows operating systems including Windows 98, 95, NT, ME, 2000, XP, Vista, 7.0, 8.0 and above. Low noise: 18key numeric keypad designed for minimal noise, making it suitable for working with spreadsheets, accounting documents, or financial applications. U shaped keys: Soft to the touch with a U shaped profile, offering a comfortable tilt angle and helping to reduce wrist stress. Compact and functional: 18key layout designed to save desk space while delivering essential numeric input. Use scenarios: Data entry in spreadsheets or accounting software on a Windows PC or laptop, benefiting from quiet operation and wireless convenience. Quick numeric input for invoicing, budgeting, or financial tasks in a home or small office environment. In a crowded workspace or paid temporary setup where a fullsized keyboard is impractical, providing a compact alternative for numeric tasks. Notes on practicality: Supports wireless operation to reduce cable clutter. Maintains essential numeric input with a compact 18key design. Ergonomic key design aims to improve comfort during extended dataentry sessions.