1. The uniquely designed 'special keys' (printed in red) are used to access the tablet's special functions, such as the menu. This technology is only available on the MQ21 keyboard. 2. The detachable islandstyle keyboard ensures ample spacing between keys for fast and accurate typing. Weight: 250g Keyboard battery capacity: 280mAh Input: Micro USB charging 5V Charging time: 23 hours. 3. The builtin multifunctional touchpad mouse supports typing, scrolling, zooming, and other laptoplike functions. It has a screenshot capability unique to the MQ21 keyboard. Additionally, you can adjust the tablet screen's brightness with a button, play your favorite songs directly from the tablet, or quickly access the internet. 4. Provides a secure fit for the Galaxy Tab S4 10.5. The flap can be folded back during tablet use and magnetically attached to the base of the case, keeping the display unobstructed. Features precise cutouts for various ports, including a dedicated opening for easy access to the power button, camera, and Micro USB. Includes a stylus pen holder.