30-KEY PROGRAMMABLE & NKRO NUMPAD: TD31Pro numpad adds more commonly used shortcuts than small numeric keypads, including ESC, Tab, Backspace, Delete, Home, PgUp, PgDn, and four arrow keys to suit your more needs. Equipped drivers program numeric keypad to customize different shortcut functions for fast operation. The NKRO full-key programmable keyboard supports 30 keys for simultaneous operation. No matter how many keys are pressed at the same time, the function of each key responds, making it easy for quick gaming and working | MULTIFUNCTIONAL KNOB & COLOR DISPLAY: The mechanical numeric keypad with color smart display is an interactive interface that can be updated and customized in real time. The smart screen can switches between languages, connections, operating systems and lighting effects. The rotary knob is used for volume and screen control. This mini numeric keypad strikes a balance between functionality and space-saving design | HOT-SWAP CUSTOM KEYBOARD & LINEAR SWITCH: This custom mechanical numpad keyboard with hot-swappable base supports 3-pin or 5-pin switches replacement. Even keyboard beginners can easily DIY your own keyboards without soldering issue. BOYI Jadeite Green HIFI Linear Switch with pom stem, which means that each stroke begins and ends with almost exactly the same amount of force, resulting in a “smoother” and “faster” feel for your typing or gaming | THREE MODE CONNECTIVITY & 1000MAH CAPACITY BATTERY: This wireless mechanical number pad supports Bluetooth 5.0/2.4GHz/Type-C triple modes connection. Bluetooth effectively reduces power consumption, press FN+1/2/3 to switch between three devices, and the detachable USB-C cable can be recharged while in use. The numeric keypad also features a large capacity 1000mAh battery that ensures long hours of use | SOUTH-FACING BACKLIGHT & STREAMING LIGHT BAR: This light up keyboard features south-facing LED lights for a stylish look. FN+COPY to switch backlighting mode and FN+PASTE to switch light bar mode. You can also easily control the brightness and speed of the light, allowing you to personalize your keyboard | GASKET MOUNT & ERGONOMIC PBT KEYCAPS: The number keyboard uses gasket structure to achieve a softer typing experience and a pleasurable creamy sound. TD31Pro takes premium dye sublimation PBT keycaps with ergonomic cherry profile, which provides a comfortable touch feeling, ergonomic typing surface, creating a colorful and enduring numerical keypad. The keypad is not only a portable financial accounting numeric keypad, but also a customized mechanical keyboard compatible with Windows/Mac/Linux/Android/IOS systems