A quick check of the compatibility matrix, shows this as green (tested and working with a NExT)
Product description says 125kHz
On my phone so Excel not the easist to view and navigate; but if you are on a PC, but look at the xNT / NTAG type implants for some more options.
Here is @W-rabbit using the lock and it looks easy.
If I recall correctly, the pineapple sticker covers a mod to the lock face.
also seach the forum for Mid300 to find a few more results if you are interested