Features: GK75 keyboardis equipped with hot swappable terminals, with which you can install optical switches directly without soldering. Note: Hotswappable with optical switches only. Not available for 3-pin & 5-pin mechanical switches. To reach a top typing experience, the keyboard adopted a creative Shallow Gasket design, with an all-in-one silicone pad. the optical switches are triggered by laser though the contact point. In this way, they can last longer than general mechanical switches.Multiple colors for your optional. Adopted the PBT material for keycaps, which is proved to be sturdy and oil-proof even after long time use, ergonomic. Support dual system driver software-, and with blue backligh effects for better gaming experience Specifications: Model: GK75 Hotswap: Yes, with optical switch only Case Material: ABS plastic Backlight: Blue lights Structure: Shallow Gasket Mount Keycap Material: PBT Keycap Profile: GK75 Connectivity: Type-C Wired Only Size: as pictures Switch Types：Color Optional Package Includes: 1PC GK75 Mechanical Keyboard note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!