Product was defective (uneven ANC and…
Product was defective (uneven noise cancellation and audio cutting out during vibration). Seller required video proof and informed that I would be responsible for return shipping and customs costs if no defect was found. The issue was ultimately resolved directly through Bose warranty service. Buyers should be aware that the company is based outside the EU, and therefore EU consumer protection rules may not apply in the same way as when purchasing from an EU-based retailer. In my case, warranty handling required contacting the manufacturer directly.