[Premium Protection] Crafted from PU leather, providing reliable protection against daily scratches and damage [Bluetooth-compatible 5.0 Connectivity] Bluetooth-compatible 5.0 connection ensures a stable and quick link for seamless usage [Long-Lasting Battery Life] Built-in 300mAh battery supports extended use without frequent recharging [Adjustable Viewing Angles] Multi-angle adjustment stand offers hands-free convenience, perfect for typing or watching videos [Colorful Backlit Keyboard] Customize your typing experience with multiple backlight colors and adjustable brightness levels [Portable and Lightweight Design] Slim and easy-to-carry design makes it ideal for travel and on-the-go use Specifications:_x000D_ Bluetooth-compatible version: 5.0 Lithium battery capacity: 300mAh Working hours: 100 hours Standby time: >100 days Battery life: 3 years Number of keystrokes: 5 million times Key function introduction:_x000D_ FnandC: Turn on the BT keyboard FNandCtrl: Back to the main page key FNandWin: close the touch version FNandF11: Volume up