The expiry date mentioned on an electric toothbrush generally does not mean the device will suddenly stop working after that date. It usually refers to the manufacturer’s recommended shelf life or the period during which product performance and quality are officially assured. The toothbrush may still function normally after Dec 2026 if it is well-maintained and working properly. However, components such as the battery or brush heads may gradually lose efficiency over time, and regular replacement of brush heads is still recommended for hygiene and effective cleaning.