Compatible For Samsung Galaxy Tab S9 FE Shockproof Tablet Case, Backlit Bluetooth Keyboard Slim Wireless Keyboard with Touchpad Quality Wireless Bluetooth keyboard combined with PU leather+PC protective case The Bluetooth 5.2 keyboard has a long-lasting button life, is durable to use The keyboard has a built-in 150mAh lithium battery, convenient to charge and use Can be converted to a supporting stand for hands-free movie watching and web surfing Strong magnetic absorption at the keyboard position, and the keyboard won't move easily There is a slot to place your pencil device, don't worry about losing it (Not including the pencil)  Designed with a touchpad instead of a mouse, it is convenient to use Fine workmanship, and equipped with a backlit so that you can normally use it at night Slim and lightweight design, convenient for travel, business trips, etc. Specifications: Bluetooth: Bluetooth 5.2 Li-ion battery: 150mAh Operating time: 100 hours Standby time: >100 days Battery life: 3 years  Keystrokes: 5 million times Bluetooth Mouse Function: Fn+C key: open the Bluetooth FN+Ctrl key: Return to home page FN+Win key: Close touchpad FN+F11 key: Volume up Other functions can be used according to the keyboard prompts