Costco Kirkland Signature 9.0 (Product Information)

For those complaining of call quality for the other caller: The feedback measure matters. If it hasn’t been run, have your provider run it. Ask them to set whichever ear has the better feedback measure as the master BT ear. If the feedback measure is junky (i.e. you’re in open domes when you need closed, or any domes when you need custom tips) the call quality for ther person on the other end is going to be junky.

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