Tri-mode Connection Keyboard: AULA F99 wireless mechanical keyboards work with Bluetooth, 2.4GHz wireless and USB wired connection, can connect up to five devices at the same time, and easily switch by shortcut keys or side button. F99 computer keyboard is suitable for PC, laptops, tablets, mobile phones, PS, XBOX etc, to meet all the needs of users. In addition, the rechargeable keyboard is equipped with a 8000mAh large-capacity battery, which has long-lasting battery life Hot-swap Custom Keyboard: This custom mechanical keyboard with hot-swappable base supports 3-pin or 5-pin switches replacement. Even keyboard beginners can easily DIY there own keyboards without soldering issue. F99 gaming keyboards equipped with pre-lubricated stabilizers and LEOBOG greywood switches, bring smooth typing feeling and pleasant creamy mechanical sound, provide fast response for exciting game Gasket Structure and PCB Single Key Slotting: This thocky heavy mechanical keyboard features a adva