[ERGONOMIC DESIGN AND COMFORTABLE TYPING] This wireless keyboard is ergonomically designed with a palm rest that relaxes the wrist while typing and it can be found a comfortable typing position by adjusting the tilt angle of the folding stand. The symmetrical design of the mouse is comfortable to hold and suitable for everyone. NOTE: THE USB RECEIVER IS INSERTED IN THE BATTERY COMPARTMENT OF THE MOUSE, YOU CAN FIND IT WHEN OPENING THE MOUSE BATTERY COVER. [HIGH SENSITIVE AND 3 LEVEL DPI MOUSE] The optically designed wireless mouse can achieve sensitive and accurate control on different smooth surfaces. It has 3 levels adjustable DPI (800/1200/1600) that you can easily change the cursor sensitivity of this mouse to meet different activity needs. [STABLE 2.4G WIRELESS CONNECTION ] This wireless keyboard and mouse combo connects to use a 2 in 1 USB receiver, plug, and play, no need to install any software and drivers. Enjoy a strong and reliable wireless connection with 2.4G and up to 33 ft away to ensure no delays and dropouts during use. [SMART POWER SAVING MANAGEMENT ] EDJO wireless keyboard and mouse combo has smart power-saving management. If you do not operate the wireless keyboard and mouse for a period of time, it will enter auto-sleep mode to save energy, you can wake up the keyboard by pressing any key and clicking or moving any button to activate the mouse. NOTE: The keyboard needs 1 x AA battery, the mouse needs 1 x AA battery. (Battery Not Included) [WIDELY COMPATIBLE AND 12 MONTHS AFTER-SALES SERVICE ] EDJO wireless keyboard and mouse combo include a full-size keyboard and a highly sensitive mouse. It is widely compatible with Windows, Linux, Mac and other operating systems. Suitable for desktop, PC, notebook, laptop, etc. If you encounter any problems during use, please contact us, and we will provide a satisfactory solution.