Product 5: Switchable Redragon K621 Horus TKL RGB Mechanical Wire with Bluetooth and Wireless Low Profile Linear Red Switch in Black The K618 has three Bluetooth devices that can be stored, a wired mode, a 2.4Ghz wireless mode, and the ability to save and switch connections to five devices at once. Most of the gadgets in your house can be operated with just one keyboard. Excellent RGB for Gamers Up to 20 bright backlight presets