They are sometimes used as new version releases a being the
first b later etc etc. They are also use to denote additions of
capability of the product. a may have sound b might have recording
ability etc etc.
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∙ 14y ago
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Q: I looked up a product and it's model number was 33162 but when I searched for it in stores I could only find 33162H or 33162R and am wondering what does a letter behind a product number mean?