Hi Dod
Actually there is the traditional to wear all types of amulet
outside the shirt including Jatukam. This is to prevent amulets
from getting moist fr body sweat which might damage them.
If you are interested in this amulet, there is the website both in
Thai and English with alot of images of old Jatukarm (before 2007)
B.E.2530 - 2549
www.taradpra.com/AKRAANDAMAN
Cheers
Tan