The Keychron K3 is the universal wireless mechanical keyboard with an ultra-slim case and a compact 75% layout for maximum efficiency in the smallest of spaces. Thanks to the innovative and low-profile design, the low-profile switches are up to 40% flatter than conventional switches and still offer the exceptional responsiveness of mechanical keyboards. Together with the streamlined aluminum case, this makes the K3 one of the flattest and lightest wireless mechanical keyboards in the world. 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. The keyboard features excellent white backlighting for an optimal and customized typing experience. With 15 different lighting modes, flashing, breathing or static, the desired atmosphere can be created. This model features a sleek and stylish aluminum frame for increased durability and rigidity. The large 1550 mAh battery lasts up to 72 hours with the backlight on .