Features: brand new and high quality. Wireless keyboard and adjustable DPI. Wireless mouse with optical sensor. Plug and for play fast and convenient. Low power and current consumption design, making battery used more longer. Ergonomics design, comfortable hand feeling, reduce fatigue. Low voltage alarm indicator keeps reminding replace battery. Human oriented design, increasing a series of multimedia keys. Multiple auto dormancy function, upplug receiver or shutdown, mouse will immediately fall into sleeping, saving more power. Can be an effective anti-violence and anti-beat frequency of use for high-intensity gamer. Specifications: Item Type: Wireless Keyboard Mouse Material: ABS Plastic Color: Black/White(shown as pictures) Size:(Approx.) Keyboard Dimension: 285x120x20mm/11.22x4.72x0.79in (L x for W x H) Mouse Dimension: 110x60x20mm/4.33x2.36x0.79in (L x for W x H) Signal: 2.4GHZ Interface: Wireless, RF 2.4 G Mouse Button: DPI DPI: 1000-1200DPI Frequency: 2402MHz - 2480MHz Keyboard Voltage: 3V Keyboard Current: 1.5mA Keyboard Power Supply: 2 x AAA batteries (not include) Mouse Power Supply: 2 x AAA batteries (not include) Suitable scope: Desktops and Laptops for: for Windows 98/2000/XP/ Vista /Win7/ Win8/for Mac operating system, etc Quantity:1Set (other accessories demo in the picture are not included) Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Compare the detail sizes with yours, please allow 1-4CM differs due to manual measurement, thanks Package includes: 1 X Wireless Keyboard (No retail package) 1 X Wireless Mouse