Welcome to our store! 1. Programmable Function: This mini keyboard is programmable and features a rotary knob. It allows you to freely configure keys and functions, enhancing work efficiency and comfort. 2. Dual Mode: This programmable keypad can be easily connected via USB cable or wireless BT, offering wide compatibility with various devices. 3. Red Switch: This gaming keypad features a mechanical structure and a red switch, ensuring faster response and a longer lifespan. 4. Ergonomic Design: This mini mechanical keypad also boasts an ergonomic design for easier and more comfortable typing. 5. Durable Acrylic: This one-handed keypad with a knob is made of premium acrylic material, which is strong, durable, and resistant to wear. Item Type: Mini Keyboard Material: Acrylic Connection: Wired USB/Wireless BT Key Type: Red switch mechanical keyboard (the knob can be pressed and used as a programmable key) Supported Operating Systems: Suitable for Win, for Vista, for Linux, for OS X laptops. Battery Type: Built-in 800mAh lithium-ion battery 1 x Mini Keypad 1 x USB Cable Customers are our top priority. If you discover any issues with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.