Wave Ergonomic Wireless Keyboard and Mouse Combo The wireless keyboard features a wave key and wrist rest design that naturally fits your fingers and relieves wrist strain. The adjustable stand allows you to set the keyboard to the most comfortable height, making it ideal for long-term use. Note: The USB receiver is located on the back of the mouse. Wireless Optical Mouse The wireless mouse is designed with comfort in mind, featuring a contoured shape that fits snugly in the palm and complements the natural curve of your right hand. All controls are easily within reach. This mouse is equipped with forward and back functions, allowing you to navigate the web faster and more efficiently than ever before. Plug-and-Play 2.4G Wireless Connection One 2.4 GHz USB receiver can connect both the keyboard and mouse, or they can be used separately. Plug and play no software download is required. The 2.4 GHz wireless connection offers a strong and reliable signal up to 33 feet (10 meters), without delays. Automatic Power Saving Function The ULSOU wireless keyboard and mouse combo features an automatic power-saving function. After 30 seconds of inactivity on the keyboard and 15 minutes of inactivity on the mouse, both devices enter sleep mode to conserve battery life. This greatly extends battery life, and any button press will activate the devices again. The keyboard requires 1 AA battery, and the mouse requires 1 AA battery. (batteries not included). Wide Compatibility and Dual System Layout This wireless keyboard and mouse combo is compatible with Windows XP/Vista/7/8/10/11, Mac, and other operating systems. It s suitable for desktops, Chromebooks, PCs, laptops, and more. You can switch between Windows and macOS by pressing FN+Q or FN+W.