Chemistry, Christmas, and geocaching combine in this trackable trio. The front of each shows an atom with spinning electrons and 3D details. The back has a ridged pattern around the outside ring and a laser engraved plate in the centre that is adhered to the token. They feature data from the Periodic Table for holmium, whose symbol Ho is used to give the trackable a Christmas flavour. Cutouts in the metal add to the appearance and allow for easy attachment to an object for travel.or to hang on your Christmas tree and make it trackable!