As a reminder, the title tag is the first tag read by Google on your page, and also the most important tag in SEO. All the rules in this article.

For product pages, the general rule we recommend is:

<title>Main keyword - value proposition + brand name</title>

Examples:

1. I am an e-merchant, I sell smartphones, my title could be as follows:

<title>Buy Apple iPhone 11 64GB Black - Free Shipping - My Brand</title>

2. I am an e-merchant, I have a very extensive product catalog, my title could be as follows:

<title>Category - Product name - value proposition(or EAN) + My Brand</title>

Darty example:

<title>Compact camera Canon POWERSHOT G1X MARK III - 2208C002 | Darty</title>

3. For specific products, such as CDs:

<title>Album name - Artist - Format (CD Album / Vinyl / Box set..) - My Brand</title>

So you should adapt it to the tree structure of the site and the type of product.