A USB dongle is highly suggested for SliceMK split keyboards as it significantly improves the keyboard's battery life (read about why).
The Raytac USB Dongle is the recommended option for the majority of users due to its compact size and professional enclosure.
This dongle is specifically sold for use with SliceMK split keyboards. This is not a generic Bluetooth dongle. For this reason, dongles are only sold to customers that have purchased or are purchasing a SliceMK keyboard; all other dongle orders will be cancelled.
Third Party Dongles
Please refrain from using third-party dongles with SliceMK keyboards. While there are alternatives that are compatible from a technical point of view, they are not officially supported. Users who opts to use an unsupported third-party dongle are responsible for configuring their own firmware.