Package Dimensions:  3.94 x 3.86 x 0.63 inches

Item Weight:  1.06 ounces

Hardware Interface:  Bluetooth, USB

Compatible Devices:  Desktop Laptop Mouse Keyboard Printer Speaker

Operating System:  Windows 8.1, Windows 7, Windows 11, Windows 10

Data Link Protocol:  Bluetooth, USB

Data Transfer Rate:  3 Megabits Per Second