1. Adopt high-quality chips with stable performance. 2. Built-in 150mA lithium battery, can last for 200 hours. 3. Specially equipped with Micro USB cable for charging, charging for about 3 hours. 4. Sleep function: if no operation is performed, the keyboard will automatically enter the power saving mode within 15 minutes 5. Universal for iOS/Android/windows system. 6. 59 key design, with 14 IPAD shortcut function keys. 7. The keys are screen-printed with UV peritoneal treatment, which is durable and will not fade after 5 million times of friction and beating. The surface of the keyboard is brushed, which is very textured. 8. Scissor foot button design, sensitive typing, quick response and good hand feel.