Replies to the 2 above posts:
The player is an eBay special - listing says the name is "Support 128GB Bluetooth MP4/MP3 Lossless Music Player FM Radio Recorder Sports".
Sorry, I don't know the manufacturer. Except "Made in China".
Here's some info from the listing:
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eBay item # 287408045872
Item specifics
Brand
Unbranded
Bluetooth
4.0 supports bidirectional transmission
Advanced
Included (Recently Read Books, Markup, Autobrowse)
Recording format:
MP3/WAV
Size
90.5MM*39.5MM*10MM
Image browsing support:
BMP JPG format browsing
Model
MP4
WINDOWSXP/VISTA/WINDOW8
WINDOWSXP/VISTA/WINDOW8
Music playback:
support MP3, WAV and other playback
Net Weight:
about 31g
Recording support:
FM MIC recording, format support MP3 WAV
Maximum supported capacity:
128G TF card (not included)
Color
Blue
Seller's description:
The support 128GB Bluetooth MP4/MP3 Lossless Music Player is a versatile device that allows for both music playback and recording. With Bluetooth 4.0 support for bidirectional transmission, it offers seamless connectivity with other devices. The included advanced features like recently read books, markup, and autobrowse enhance the user experience. With MP3/WAV recording format support and a maximum capacity of 128GB TF card, this portable music player is perfect for sports and other activities. Additionally, the compact size of 90.5MM*39.5MM*10MM and lightweight design make it convenient for on-the-go use.
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The cable that came with it is, I think, only for charging. So, I bought a cable on Amazon that says it will do data transfers, etc. Didn't make a difference.
Do you think the absence of an SD card has anything to do with this?
Thanks for the replies. Let me know if you need anything further.