🎊【21 KEYS FUNCTIONAL MINI NUMPAD】:Fully Programmable Keys.The TD21 Engineered with a 21-key PCB, this numpad has the space and processing power to handle your most demanding tasks.It’s the perfect choice for gamers, programmers, and professionals looking to streamline their workflows! | 🎁【HOT SWAPPABLE MECHANICAL SWITCH】:The TD21 features on the hot-swap capability. Hotswappable Mechanical Switch of TD21 can be replaced by other hotswap Mechanical switches without soldering. You can customize the keyboard easily and change out the switches to have a completely different tactile experience. can compatible with most 3-pin and 5-pin switch in the market. | 🎊【3 MODES CONNECTIVITY WIRED&WIRELESS】:Hot Swappable Bluetooth 5.0/2.4GHz/Wired Numeric Keypad can Connect up 2 devices at the same time. And equipped with a detachable USB type-c cable and a 2.4GHz dongle(adaptor). Plug-and-play, no complicated connection process.Even If the keyboard is out of power on Bluetooth Mode, you can still use it normally in N-key rollover (NKRO)wired mode. | 🎁【PBT OEM PUDDING KEYCAPS NUMERIC KEYPAD】:Come with High quality PBT keycaps are often considered the top choice for keycap materials, even over ABS keycaps, as PBT is much more durable, oil-resistant (won’t get shiny over time like ABS), and stays true to color longer! | 💝【COOL RGB BACKLIGHT EFFECTS】:With quite a few stunning RGB backlight effects. Simply press:FN+5 keys to switch between each other. Backlight effects will go with most keyboards and make a good match. And you can easy to control light brightness and speed! | 🎊【PRO SOFTWARE CUSTOMIZABLE】:This TD21 Keypad RGB presets are nice and varied! And also have software driver,you can remap your numpad by your willing. Customize your own vibrant lighting effects with Boyi software. Enjoy your wonderful life from this Mini Numeric Keypad.