Good quality 571

The plastic is of good quality,
the spring is franc, the key will pop up with ease and closes as it should
However, the claw of contact for the battery (and the printed circuit board) are not aligned,
you have to be patient and be readjust to being in front, otherwise it does not work (no remote opening in this case) ...

For the rest, everything is ok

the pin of the key shank really easily removes little, my personal, I used a super thin nail, and a large flat pliers ... after struggling somewhat, I could put the cut stem ( the original one)