1.Dual Mode Connectivity: This wireless mechanical keyboard supports dualmode connectivity with both 2.4GHz and Bluetooth 3.0/5.0, allowing you to connect up to 4 devices simultaneously—3 via Bluetooth and 1 via 2.4G. Easily switch between devices using the Fn1/2/3/4 keys. 2.LowProfile Mechanical Keyboard: The ultraslim mechanical keyboard features lowprofile silent red switches that are 40% thinner than traditional switches, ing shorter key travel and faster response times. Combined with 4.6mm high ABS lowprofile keycaps, this keyboard is both sleek and lightweight. 3.75% Compact Design for Win/Mac: Specifically designed for Mac, this 84key compact layout saves 25% more space compared to traditional 104key full size layouts. It is fully compatible with both Mac OS and Windows, supporting all essential Mac multimedia keys. Perfect for both work and gaming. 4.USBC Rechargeable Long Standby: Equipped with a builtin 1000mAh rechargeable lithium battery, this wireless mechanical keyboard extended battery life. It comes with a USBC charging cable, allowing you to use the keyboard while it charges. This keyboard does not support backlighting.