1、Plug-and-Play --no drivers required; USB port required 2、Compatible with most computers System: Windowns98/95/NT/ME/2000/XP/Vista/7.0/8.0) 3、Spill resistant and dust proof 4、Best for Notebook Users who always work with number keys, Mini digital keyboard 5、Integrated ergonomic tilt provides added comfort which helps reduce strain, great for those working on spreadsheets, accounting files or financial applications Description: Light weight and compact design makes it both nice and practical. Great for those working on spreadsheets, accounting files or financial applications. Never miss it! Features: 1. Plug-and-Play --no drivers required; USB port required. 2. Compatible with most computers System: Windowns98/95/NT/ME/2000/XP/Vista/7.0/8.0). 3. Spill resistant and dust proof. 4. Best for Notebook Users who always work with number keys, Mini digital keyboard. 5. Integrated ergonomic tilt provides added comfort which helps reduce strain, great for those working on spreadsheets, accounting files or financial applications. Specification: Material: ABS Color: Black Interface: USB2.0 Number of keys: 18 (key) Package Weight: 110g Cable Length: Approx. 1.2m / Approx. 47.2inch Size: 13.8 x 8.5cm / 5.4 x 3.3inch Quantity: 1pc Compatible With: Windowns98/95/NT/ME/2000/XP/Vista/7.0/8.0 Package included: 1 x USB Numeric Keypad Note: 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.