Dareu EK87 GLORY Optical Blue Switch Hot-Swappable Mechanical Gaming Keyboard The Dareu EK87 GLORY Optical Blue Switch Hot-Swappable Mechanical Gaming Keyboard is customized from a full spectrum of approximately 16.8 million colors and there are eleven light effect mode options. It features optical blue switches with nano waterproof technology to protect the keyboard against non-corrosive liquid and up to a higher waterproof grade, You can clean it without worries to broke when washing the keyboard. This EK87 hot-swappable Gaming Keyboard has Combination Function keys that can be activated by pressing the FN key. You can also change the modes of rainbow backlight lighting. It has 3 Blocks of Key Fields. This Dareu EK87 Gaming Keyboard is compatible with Windows XP/ Windows Vista/ Win 7/ Win 8/ Win 10 operating system. The Dareu EK87 has 1 Year Official Warranty.