Features: 2.4GHz wireless transmission, stable and no delay, strong anti-interference ability. Membrane keyboard design, straight up and down feel, fast response. Frosted keyboard, smooth surface, comfortable touch feel. The keycap fits finger pulp curve, smoother operation, comfortable to type. Ergonomic design, the mouse fits hand curve, better supports the palm, not easy to fatigue during long-time use. The keyboard and mouse share one receiver, no driver required, plug and play. Specification: Type: 2.4G wireless keyboard mouse combo Color: Pink/Purple/Yellow(optional) Keyboard Type: Membrane keyboard Key number: 84 Battery: 2*AAA batteries(not included) Voltage/current: 3V/6mA Item size: 34.4 * 15 * 2.7cm /13.54 * 5.91 * 1.06in Item weight: Approx. 444g /15.66oz Mouse Key number: 4 DPI: 800-1200-1600DPI Battery: 1*AA battery(not included) Voltage/current: 1.5V/15mA Item size: 10.4 * 6.8 * 3.8cm /4.09 * 2.68 * 1.5in Item weight: Approx. 68g /2.4oz Packing list: 1 * Keyboard 1 * Mouse 1 * User manual