Retro 18 Mechanical Number Keypad A 2-in-1 Pc numpad and calculator. Compatible with Windows and Android. Inspired By The Classics The perfect companion to the 8BitDo Retro Mechanical Keyboard. Number Keypad And Calculator Combined A 2-in-1 numpad. Switch between a Pc numpad and a standard calculator with just a click. Activate Windows Calculator app with the dedicated shortcut button. Retro Led Display The numpad features a nine-digit seven-segment display. Simple and highly visible. Ultra Compatibility Connect via Bluetooth, 2.4G wireless, or wired. Features 2 modes: Pc numpad mode / Standard calculator mode Windows Calculator app shortcut button Dye-sub Pbt keycaps.