Dyson has stopped selling its $499 CameraJet toothbrush in several countries shortly after launch, following reports of leaks, battery-compartment water damage and devices failing within seconds or days. Although Dyson says the product has not been recalled, it acknowledges a component problem affecting a small number of early batches, raising concerns about transparency and product reliability.

The device took six years and 38 patents to develop, using a camera and artificial intelligence trained on 470,000 dental images to direct rinsing fluid between teeth. Dyson has not identified the faulty component, disclosed how many units are affected, explained when shipments stopped, or said why it has not issued a formal recall; repair expert Kyle Wiens suspects a waterproofing or manufacturing-tolerance problem.