Wireless Super Flexibility: This wireless keyboard supports both a 2.4G USB dongle and dual Bluetooth modes. You can pair 3 devices by holding FN+1/2/3 for a versatile, cordless, and clutter-free setup in your office or home. Seamless Multi-Device: Functioning as an efficient multi device keyboard, it can connect up to 3 devices. Switch between them instantly with a short press of FN+1/2/3, perfect for users who operate a PC, laptop, and tablet or smartphone simultaneously. Universal System Compatibility: Easily toggle between Windows and macOS layouts by pressing FN+A/S. This bluetooth computer keyboard adapts its multimedia key functions for each system, delivering a universal experience across platforms. Long Battery Life: Enjoy cordless freedom with up to 105 days of use from a single AAA battery and 24 months of standby time. This reliable wireless keyboard ensures uninterrupted productivity for months. Full-Size & Num Pad: This is a full size keyboard with number pad,