Keychron's K2 is the first general purpose wireless mechanical keyboard designed and funded by the Kickstarter community. This model features a compact and unique 75% layout that is ideal for users who want a clean and wireless set up. The K2 comes with Gateron switches, which are considered the smoothest switches on the market right now. Whether for PC, Mac OS, Linux or even Android devices; the Keychron keyboards are compatible and meet all requirements. The desired operating system is set via a switch on the keyboard frame. With every Keychron keyboard, the additional keycaps for Mac and Windows, as well as a keycap puller, are included. For improved workflow and multitasking, you can connect up to three Bluetooth devices simultaneously and switch from laptop to tablet or mobile. This Keychron keyboard has a fully hot-swappable PCB, which means that the switches are not soldered in place. So you can easily upgrade, swap and mix the switches (without having to solder), just plug and unplug them at will. The keyboard is equipped with excellent RGB LED backlighting for an optimal and customized typing experience. With 15 different lighting modes, flashing, breathing or static, you can create the atmosphere you want. This model features a sleek and stylish aluminum frame for increased durability and rigidity. The large 4000 mAh battery lasts up to nine days (8 hours per day up to 72 hours) with the backlight on, or four weeks with the backlight off, and fully recharges in just three hours.