Black wireless earbuds charging case, found near Nugget Market

Found a black wireless earbuds charging case this afternoon around 2:45pm behind Nugget Market on Main Street in Grass Valley. It's matte black, roughly the size of a deck of cards, with light scratches along the lid and a tiny dent on the top edge. A blue USB-C cable is still plugged into the case, and there's a small blue sticker with the initials MK on the back. The interior looked empty; I didn't see any earbuds inside. It's in decent condition overall. If you're the owner, please DM with distinguishing details (sticker MK, time you last used it) and I can arrange a meet-up in Gold Country.