Feature: 1. Free DIY: This mechanical keyboard kit adopts switch hot swap switch bed that allows you to DIY your favorite switch and keycaps. 2. Switch Hot Swap: This custom gaming keyboard features switch hot swap, integrating with two layer thickened printed circuit board panel, long service life. 3. 65% Layout: This custom mechanical keyboard adopts 65 percent layout, and it does not support cable connection via USB, so the keyboard itself does not include a USB port. 4. High Hardness: This modular mechanical keyboard adopts ABS shell that ensures high hardness, metal positioning plate, interlayer sound insulation silicone, bottom silencer cotton. 5. Widely Compatible: The 2.4G mode is suitable for Win XP, for Vista, for Win 7, for Win 8, for Win 10, for OS X. The BT mode is suitable for Win 8, for Win 10(Not Compatible with Win 7 or lower system) Specification: Item Type: Mechanical Keyboard Kit Material: ABS Key Configuration: 68 Keys Battery Type: Requires 2 x AAA Batteries (Battery Not Included) Connection: Wireless 2.4G and BT 5.0 Connection Hot Swap Switch Base: Support Standard Height 5 Pin Switch and 3 Pin Switch System Requirements: 2.4G Mode: Suitable for Win XP, for Vista, for Win 7, for Win 8, for Win 10, for OS X BT Mode: Suitable for Win 8, for Win 10(Not Compatible with Win 7 or Lower System). Package List: 1 x Mechanical Keyboard Kit1 x Adapter1 x User Manual