[Numeric keypad with 34 keys] It includes pgup, pgdn, home, end, calculator, search and other functions to improve work efficiency. Bluetooth 5.1 has a stable connection and excellent compatibility, and can be used for multiple purposes, such as office work and design. * The function of the calculator icon key in the upper left differs depending on the OS of the connected device. For Mac, iOS: Search / For Windows: Calculator / Android, For other systems: It does not work. [Ultra-thin design] The combination of aluminum alloy bottom shell, ABS material top cover, and pantograph keys makes the keyboard a portable size of 146x114x13mm. The metal bottom shell improves durability and is not easy to deform, and the pantograph type is quiet and labor-saving, allowing you to experience a comfortable typing feeling like a laptop. 【USB-C Rechargeable Design】 Equipped with a USB-C charging port, it supports plus and minus insertion. It can be used for 40 days from a full charge (calculated by continuous use for 2 hours a day), and when not in use (if there is no operation for 30 minutes), it will automatically enter the intelligent power saving mode. Connect up to 2 devices: You can use Bluetooth to connect two devices at the same time, and you can freely switch between different devices with one click. 【Wide Compatibility】 It is compatible with iOS, Mac, Android, Chrome OS, Windows 8, 10, and 11. * This product is linked to the Numlock of the connected device. Please be careful when using it in combination with a tenkeyless keyboard.