How to tell whether a hearing aid is a refurbished hearing aid:
1. Confirm whether your hearing aid was purchased at a dealer designated by the manufacturer; the serial number of a customized hearing aid will change after it leaves the factory. Enter the system together with user information.
2. Check whether the body number on the hearing aid is consistent with the body number on the outer packaging box and the body number on the warranty card inside the packaging box;
3. Find the manufacturer's after-sales phone number and call the manufacturer to check the body number to check whether there is a maintenance record;
4. It is recommended to consult a professional fitting center and do not buy casually.
You can also search the official website of Deep Blue Hearing for details.