A:Answer Hi there - Once your Lexie hearing aids arrive at your doorstep, you can easily set them up yourself using the Lexie app. No need to see an audiologist. The app guides you through customizing your hearing aids to match your unique hearing profile. While Lexie hearing aids can be worn and used internationally, please note that our technical support, warranty services, and shipping are exclusively U.S. based. If you purchase your Lexie OTC hearing aids from Best Buy, their trial period and return policy will apply.