Did you know that Bluetooth is named after a Nordic king? I honestly had no idea. until recently In fact, the symbol for Bluetooth is a combination of two differnet Nordic symbols.
To get the cache coordinates, input the first name only of the "King Bluetooth" into Certitude. Doing so correctly will reveal the cache coordinates.
This mystery cache wasn't intended to be difficult but instead teach you something I found to be interesting. Hope you enjoy.
You can validate your puzzle solution with
certitude.