A60

for example:

ultrafire D1 : https://budgetlightforum.com/t/-/5340?page=2#comment-111287

or small sun zy-c10: https://budgetlightforum.com/t/-/5182#comment-131677

but when I will get my A60 (within a few days), I will do the modification, and I will put some pics here from the driver