[Ergonomic wireless keyboard and mouse combination] The full-size wireless keyboard adopts an ergonomic design, is equipped with a palm rest and a folding stand, which can keep it at the best tilt and prevent wrist injuries when typing for a long time. The keyboard is also designed with non-slip pads, so it stays in place when you type quickly. Note: Insert the USB receiver into the battery compartment of the mouse and open the mouse battery cover to find it. $[Plug and play 2.4G wireless connection] A 2.4GHz USB receiver can be connected to a keyboard and mouse at the same time, or it can be used alone, plug and play, no need to download any software. 2.4 GHz wireless provides a strong and reliable connection up to 33 feet (10 meters) without any delay. $[Automatic power saving function] The wireless keyboard and mouse combination has the function of automatically entering the power saving state. When you stop using the keyboard for more than 30 minutes and the mouse for more than 25 seconds, they will enter sleep mode to save power. This feature greatly extends the battery life, you can click any button to activate the device. The keyboard needs 1 AA battery, and the mouse needs 1 AA battery. (Not including battery)$[Wireless optical mouse] The mouse adopts optical design, even on some smooth surfaces, it can get precise control. 3-level adjustable DPI (800/1200/1600) allows you to choose the cursor movement speed you like. In addition, this wireless mouse adopts a symmetrical design, no matter whether you are right-handed or left-handed, you can use both hands, suitable for everyone. $[General compatibility and after-sales service] This wireless keyboard and mouse combination is compatible with Windows XP/Vista/7/8/10/X, Mac and other operating systems. Suitable for desktops, Chrome-books, PCs, laptops, computers, etc. If you encounter any problems during use, please contact us via Amazon email and we will provide a satisfactory solution.