Kirkland Aid Premium 10

They are equivalent to the Phonak Paradise 90 and can be programmed with Phonak Target .

There were reported reliability/battery issues with the KS10 and many reviewers (one example below) claim that Costco stopped selling Sonova aids due to these issues until the beginning of this year (Sennheiser).

If you are buying the old KS10 consider the following

(1) Issues explained above.

2. Costco may not want to service the units if you are not the original owner.

(3) they were released three years: who knows how much more the batteries will last.

Frankly , if I was buying an aid that is three years or older , I would get one with replaceable batteries.

Yep, never buy used rechargeable battery models! Always go disposal if at all possible.

I had KS10 batteries changed just before the end of warranty. Right side lasted 6 months, had to pay to get it replaced. Other than that they have been great.