?Long endurance?The battery capacity is 4000mAh, it can be used continuously for 35~57 hours(Experimental test results of keyboard backlight fully turned on), easily meet the work demand of a week.Turn off the keyboard light and it can be used for up to 220 hours (experimental test results). ?More fun to use? Air75 V2 with QMK/VIA. We believe with the full realization of our hardwares' potential under the new firmware, its open source code, the endless key remapping, light customization and other creative possibilities VIA offers our users, the fun has truly started(Wrist rest to be purchased separately). ?Cool RGB Backlit Effect?The backlight of Air75 V2 has more than 21 different color effects, which can be easily changed using key combination. Through console, you can even limitlessly customize lighting effects(the keycaps are not backlit).We also added two RGB light bars on each side of the Air75 V2's aluminum frame. The left bar shows caps lock and connection mode, while the right bar shows battery level and system mode, so you can see the status of your keyboard more visually. ?Supports multi-device connectivity?Air75 V2 wireless mechanical keyboard is compatible with Mac/Windows/Linux/Android/iOS,and supports Bluetooth 5.1 connectivity, 2.4g connectivity and wired connectivity modes, which allows you to connect up to 4 computer devices at the same time and switch between these computers to use them, which can satisfy a wide range of entertainment office needs. ?Translucent bottom shell design? The overall layout of the Air75 V2 wireless keyboard is similar to that of the Air75, featuring a high-quality aluminum frame. However, we have adopted a new translucent design on the bottom case of the keyboard, which makes the internal structure of the Air75v2 clearly visible and fully utilizes the overall aesthetics of the keyboard. At the same time, we've added two height stands to the bottom of the keyboard to make it even more comfortable to use.