Please find this information directly for each product.

This product does not qualify for warranty coverage.

To avoid brush head breakage which may generate a small parts choking hazard or damage teeth: Prior to each use, ensure the brush head fits well. Discontinue use of the toothbrush, if brush head no longer fits properly. Never use without a brush head. If the toothbrush handle is dropped, the brush head should be replaced before the next use even if no damage is visible. Replace brush head every 3 months or sooner if brush head becomes worn.