Stylish and light weight keyboard Leather inspired keys Convenient one-touch controls Responsive touch for speed and comfort Excellent typing experience with dedicated key Three button optical wheel mouse Resolutions: 800/1,600DPI Sensor detects motion on kinds of surfaces, including wood, plastic, and more Optical motion estimation technology High-speed motion detection up to 32-inch/sec Connection: PS2/USB Color: black Compatible with Microsoft Windows 2000/XP/Vista Input power: 5V DC ± 10% Operating temperature: 0 to 50°C Keyboard dimension: 443 x 11.9 x 133mm Mouse dimension: 115 x 50 x 25mm Keyboard weight: 610g Mouse weight: 63g Button: 5 buttons optical mouse