Compatible with Windows and Android. Connect via Bluetooth, 2.4G wireless, or wired USB. | A Numpad and Calculator Combined, PC numpad mode (connects to Windows or Android devices) / Standard calculator mode (standalone use). Windows Calculator app shortcut button. | Retro LED Display and a nine-digit seven-segment display. Simple and highly visible. | Features an independent control panel. Hot-swappable PCB. Support n-key rollover. Kailh Box White Switches V2. Dye-sub PBT keycaps for N, Fami, and M Editions. | Shop with confidence and enjoy top customer support from AKNES. Contact us if you run into any issues and we'll be happy to assist you. Read more about us on our store page.