With 2500 units sold, no one has moved to counterfeit yet(1). A device this simple will be cloned by AI in an afternoon. There is no imaginable anticounterfeit strategy.

(1)2500*$175=$437,500. Estimated profit is 33-66%, so $150-300k. Nice for a soloprenuer, but limited market, so small target for piracy.

Counterfeit != clone. I welcome competitors. They can help grow the pie.