【Premium Protection】 Crafted from high-quality PU leather, providing reliable protection against daily scratches and damage 【Bluetooth-compatible 3.0 Connectivity】 Bluetooth-compatible 3.0 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: Bluetooth-compatible version: 3.0 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: Fn+C: Turn on the Bluetooth-compatible keyboard FN+Ctrl: Back to the main page key FN+Win: close the touch version FN+F11: Volume up