This is a custom PCB made by a hobbiest, and it has an ortholinear 60 key layout. Flatbread60 supports Pro Micro and its wireless variants, such as Blue Micro. A battery switch slot and extra pinout is on the board.
See the [build environment setup](https://docs.qmk.fm/#/getting_started_build_tools) and the [make instructions](https://docs.qmk.fm/#/getting_started_make_guide) for more information. Brand new to QMK? Start with our [Complete Newbs Guide](https://docs.qmk.fm/#/newbs).