These are a wireless keyboard and a wireless mouse. The keyboard has indicator to prompt low power condition, which helps you timely change battery. The mouse resolution is adjustable from 800DPI to 1600DPI which can meet different requirements of office work or game playing. Providing 10.0m / 32.8ft wide range wireless control, it is perfect for computer users. <br>  <br><strong>Features:</strong> <br>2.4G wireless timely hopping technology, enjoying 10.0m / 32.8ft wide-range wireless control. <br>Low power consumption design, longer battery life. <br>Indicator on keyboard for timely battery change, easily to notice low power condition. <br>Adjustable mouse resolution from 800DPI to 1600DPI, can meet office and gaming requirements. <br>Low-power consumption optical IC in mouse, more power-saving. <br>  <br><strong>Specifications:</strong> <br>Keys of mouse: 4 <br>Resolution: 800DPI, 1200DPI, 1600DPI <br>Frequency: 2.4G MHz <br>Effective distance: 10.0m / 32.8ft <br>Battery (not included): 1 * AA battery for keyboard, 2 * AAA battery for mouse <br>Color: Black <br>Material: Plastic <br>Size of mouse: 10.0 * 5.7 * 3.0cm / 3.9 * 2.2 * 1.2in (L * W * H) <br>Weight of mouse: 55.0g / 2.0oz <br>Size of keyboard: 43.0 * 12.5 * 2.0cm / 16.9 * 4.9 * 0.8in (L * W * H) <br>Weight of keyboard: 391.0g / 13.8oz <br>Package size: 51.5 * 13.0 * 4.0cm / 20.3 * 5.1 * 1.6in (L * W * H) <br>Package weight: 582.0g / 1.3lb <br><strong> <br>Package list:</strong> <br>1 * Wireless keyboard <br>1 * Wireless mouse (USB receptor inside)