just asked the seller on AliExpress and he/she sent me this picture:
https://i.imgur.com/DZLN5GZ.png
they've improved the appearance of the device and probably the software. the logo on the back reminded me of
Energy Sistem eReader Pro (which is a rebranded Boyue T62)!
I wonder if the "Supported SD cards MicroSD/SDHC up to 64 GB." on Energy Sistem's website is a mistake or it's one of those "Enhancements" they're talking about (the original T62 only supports microsd up to 32gb).