Justin Bove
Contributor
The Mikron is not environmentally sealed. The Core Supreme is.
Check out these two pictures. You can see the Core Supreme has a CWD.
Here is the Mikron.
Though if you dive in mostly warm water adding a cold water kit is a waste. Just make sure to wash your first stage and inspect the top area where the hex key slot is. Just make sure no dirt/sand/etc is down the hole. I'll let others explain the pro's and con's of completely sealed first stages.
Check out these two pictures. You can see the Core Supreme has a CWD.
Here is the Mikron.
Though if you dive in mostly warm water adding a cold water kit is a waste. Just make sure to wash your first stage and inspect the top area where the hex key slot is. Just make sure no dirt/sand/etc is down the hole. I'll let others explain the pro's and con's of completely sealed first stages.