TRI-MODE CONNECTION: The EWEADN X87 wireless mechanical keyboard offers BT5.0, 2.4GHz, and USB wired connections. Press and hold the FN + Q/W/E/R key combinations to switch between BT1/BT2/BT3/2.4G modes. It can connect up to five devices and adapt to specific needs. The shortcut button switches between Windows and Mac systems. X87 is compatible with PCs, laptops, tablets, mobile phones, PS, XBOX, etc.. FIVE-LAYER GASKET STRUCTURE: The 80% layout and 87-key mechanical gaming keyboard feature a five-layer gasket structure, built with double layers of sound-absorbing foam, an IXPE switch bottom pad (10x), an FR4 1.2 mm slotted PCB, PET film, and a silicone bottom pad. This sophisticated construction significantly reduces typing noise and resonance, providing a premium typing experience in a tranquil focused environment. 5,000MAH LARGE-CAPACITY BATTERY: The X87 is equipped with a 5,000mAh super-large-capacity battery that lasts up to 40-46 hours with RGB on and up to 460 h with RGB of