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Trying to identify older ReSound BTE model

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Hi

I’m trying to assist my elderly father to determine the correct ear hooks and size tubing he needs for his older model ReSound hearing aids. They take size 13 battery. I’ve attached some photos. There seems to be some sort of serial number that is barely legible - the number 0297 is legible. A user guide that I think came with the aids mentions M70-80.

I’m trying to work out what size tubes I need. A local supplier here talks about size 12 standard, size 13 medium etc https://healthcare.reidtechnology.co.nz/products/hearing-clinical-products-nz-clinical-products/pre-formed-hearing-aid-tubing/7

And what ear hooks I need. A local supplier has 3 options for Resound https://japebo.nz/resound-hooks/1

Here are some photos

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The molds are Phonak 985 123 / 2332N275

Any assistance greatly appreciated… and apologies in advance as I’m sure you get these queries all the time… and greetings from New Zealand.

Cheers
Richard

The model and serial number is located inside the battery comparment , you will probably need a magnifing glass to read it

Sincere thanks to you both for taking the time to reply. I actually found the model number (in the place the instruction manual said it would be located - see photo below) but it could only be seen if you shone a light directly on it and if you looked very very very carefully. The model is AL777/87 dviw - which as has been pointed out is the Alera.

I guess I’ll just take a bit of a gamble and get the size 12 standard (2.16mm ID x 3.17mm OD) and size 13 medium (1.93mm ID x 3.10mm OD) tubes mentioned in my first link - seems a good place to start.

And I’ll get the two types of ear hooks that don’t have filter/damper that are mentioned in my second link - and work on the basis of trial and error. Thanks for alerting me to this filter/damper issue.

Thanks again

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