High Compatibility: Bluetooth 3.0 technology provides a cable-free clutter-free connection, compatible with Windows/Android/iOS system. It can be connected to various devices, such as smartphones, iPhone/iPad/Android/PC. (The touchpad function is NOT available for iOS system.) Bluetooth Connection: Open the tablet PC setting Bluetooth into searching and pairing state; You will find the Bluetooth 3.0 keyboard and click to next step; According to the table PC tips to input the correct password then click Enter button; There have a tip for connecting successfully, you can use your keyboard comfortably. Tri-Folding Keyboard: The foldable bluetooth keyboard with touchpad is made of aluminum, light and durable, without worrying about daily wear and scratches. Its open size is 12.4x3.62x0.27, folded size is 6.29x3.62x0.47. It can be folded up and placed in a pocket or bag without taking up too much space. The elegant matte design is perfect for your tablet, phone and laptop. USB Charging: The foldable keyboard with touchpad is equipped with a USB cable, which is compatible with most computers, laptops, portable chargers and other devices with USB output. The charging time is 2 hours, and the uninterrupted working time is 48 hours, standby time is 560 hours. A full charge is enough to maintain your short-term business trip or vacation. Perfect Gift: The simple, stylish and foldable keyboard with number pad is the best gift for anyone who travel or business trips frequently. It allows you to operate mobile devices while on the trip. Writing is fast, simple and error-free You can record all ideas at any time Quiet keys also allow you to concentrate on your work. Product Bluetooth Keyboard Bluetooth 3.0 technology provides a cable-free connection, compatible with Windows/Android system, you can operate mobile devices while on the trip, record your all ideas at any time. Bluetooth Connection Turn on the wireless keyboard power switch to the ON position, and the Bluetooth indicator lights up.Press Fn and Q/W/E key (Q for iOS, W for Android, E for Windows) to select operating system. High Sensitivity Touch Pad Quiet Design Quiet key llows you to operate mobile devices while on the trip, provideing a more comfortable experience. Touchpad area offer enough sensitivity, helping you improve work efficiency.