I have a pair Oticon Real 1’s from my . I am a engineering type (doctors hate me) I noticed each had different serial numbers. You can see serial numbers and date of manufacture (I using the battery type) by opening the battery drawer and looking through to the other side of the HA. My HA serial numbers are B487Z4 and F15TJP with both having a manufacturing date of 1/23. Usually when a serial numbers are this different,with same manufacturing date, it represents engineering changes to a product. My AuD says each one was made to the same specs, but at a different manufacturing plants. Anybody know if that is true.Thank you ahead of time… .
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