This wand can be used as a spellcasting focus and allows you to cast one additional cantrip as if you knew it, as long as it is on your spell list. Each cantrip wand has a cantrip imbued within it upon creation, and will be known by its name (such as a fire bolt wand or __light wand_).
Other implements exist for the storing of cantrips from other classes (like cantrip holy symbols or cantrip instruments), and though these are wondrous items they function like wands.