1. Ultra-thin size: the thinnest thickness when unfolded is only 0.986cm.Easy to carry, easy to travel and low burden: the three fold size is smaller, easy to put into the bag pocket 2. With digital area: With digital area, you can enjoy a comfortable office experience 3. Excellent hand feel, easy and effortless: use self-developed scissors foot keys to create a comfortable mute keyboard 4. Adopt Broadcom Bluetooth-Compatible chip imported from the United States: the Bluetooth-Compatible connection is more stable and the compatibility of devices is better.Concealed shaft structure: concealed structure design is beautiful and atmospheric, and will not interfere with normal typing 5. Rich multimedia functions: usage IOS/Android system: Fn+corresponding functions Windows system Fn+Shift+corresponding functions; Support Windows, Android and IOS systems: support mobile phones, tablets and notebooks with Bluetooth-compatible function, easy to use.