IMPORTANT NOTE: This keyboard is Compatible with 4 Systems, please press FN+Q/W/E/R to switch the required system before use (FN+Q is for iOS , FN+W is for Android, FN+E is for Windows,FN+R is for Mac ). Perfect for iPad, iPhone, Samsung Tablet, Computer, Laptop, Mac Devices etc Support 3 Devices Work Together: can connect to 3 devices at the same time, you only need to click the BT1/BT2/BT3 button to switch to the corresponding device. Achieve efficient collaborative work Foldable & Portable: can be folded into a Small size (7.24 x 4.52 x 0.43 inches) , easily put into your bag, making it more convenient for you to carry it on airplanes, coffee shops, libraries, travel, and at work Convenient Work: A full-size keyboard with numeric keys is equipped with a mobile phone holder, making your work easier and more comfortable Long-lasting Battery Perfect for Travel: Fully charged in 2 hours, with a standby time of up to 90 days. Also with sleep function, it will automati