A USB dongle is highly suggested for SliceMK split keyboards as it significantly improves the keyboard's battery life (more information).
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
While there are third-party dongles that are compatible from a technical point of view, please be aware that they are not officially supported by SliceMK. Users that opt for a third-party dongle will be responsible for configuring their firmware accordingly.