?RGB Backlight and Software Customization?Up to 15 factory-set lights and music rhythm modes are free to choose from the keyboard. Custom software is also available for designing your new effects. Build macros, and set up per-key lighting and effects. NOTE: Only X75 PRO has wireless connection. The X75 only has wired connection. ?Hot Swappable PCB, Compatible with 3Pin/5Pin Switch?X75 is equipped with hot-swappable PCB to ensure free replacement or change of switches. It is compatible with most 3-pin and 5-pin mechanical switches. Pre-installed the pre-lubed custom switches providing unrivaled tactile responsiveness with up to 50 million keystroke lifespan. ?Unique Transparent Design?Pursuing ultimate transparency, the X75 takes a high-quality transparent polycarbonate keyboard top and buttom case, clear keycaps, and transparent crystal switches. The keycaps is High-Quality Transparent PC Material with UV Printing Keycaps.The whole body is transparent, making the RGB lighting more gorgeous, creating a visible environment even under dark conditions. ?Gasket Mounted Mechanical Keyboard?As to give a better Gasket typing experience, in addition to the silicone gaskets on the plates, the X75 adds sandwich silicone sound dampeners to the plate and fully-fitted large bottom silicone pad between the top and bottom cases. This design significantly reduces the gap between the PCBA and bottom case, avoids the noise of the impacted metals, maintains the flexibility of the gasket structure, and improves the overall typing sound. ?Multi-Device and Tri-Mode Wireless Connectivity: Bluetooth 5.0&2.4G&Type-C Cable?Equipped with a 4000mAh capacity battery, YUNZII X75 PRO keyboard support Bluetooth, 2.4G wireless and wired connection. Compatible with Laptop, iPad, IOS, Windows, Mac or Android. No fussy connection process, the wireless connection is quick and stable. Fn+Space can check the battery capacity anytime. 2.4G wireless receiver and wired cable are included.