My friend just got this lock and it works perfectly with my NExT. It can read from about 1cm away. Which is good because if you touch the numbers by accident it stops polling for NFC cards for a bit.
Once you build muscle memory you can open it on the first try pretty easily. I’m thinking about getting one for my house but I don’t have anywhere to put it lol 
I did not test it with my FlexUG4 or my FlexSecure, but as with most Chinese TTLock based locks, it cannot read my Apex Module or his Apex Ring.