Read more: Sony CRE-C10 OTC Hearing Aids Deliver Great Sound with One Flaw Problem solved for Sony’s second generation CRE-C20 ($999.99). For the same price, you now get the same discrete ...

Sony has two other hearing aids on the market, the CRE-C10 and the CRE-E10. The C20 is similar to the C10 in form, Sony said, but it's rechargeable through its case, lasting up to 28 hours.