USB Type-C Earphone Conversion Adapter and Earphones (Junk/For Parts)

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These are junk items consisting of the following three types of USB Type-C Earphone Conversion Adapters and Earphones (with case).
From left to right in Photo 1, they are as follows:
① This is an adapter that converts a smartphone's USB Type-C to an earphone jack.
I purchased it at Daiso, but it seems to be for USB models that support analog audio output, and it does not have a built-in DAC, so it could not be used with iPhone 16 or AQUOS Sense 10.

② Type-C to 3.5mm Conversion Earphone Jack Conversion Adapter
This was usable with iPhone 16 and AQUOS Sense 10, but it appears to be broken, and the sound cuts out or does not play properly.
[Reference: Product URL]
https://item.rakuten.co.jp/arkstore/j5661/?s-id=ph_pc_itemname

③ JVC Victor Canal Type Earphones HA-FX33X-B (Black)
It appears to be broken, and the sound cuts out or does not play properly.
Only the instruction manual, the main unit, and one case (photos 5 and 6 show different angles) are included.

As these are used items, there is no guarantee of operation.

Please purchase if you understand and accept this condition.