About Add Gear Refining

What does refining do for add items? o.o
I mean coz:
Weapon - Dmg ofcourse
Armor - I heard its to up resistance? (And probably def?)
Addititional Gear - ?? (Like armor?)
Special Gear - Unrefinable

Or the only things to refine are the armor and weapon? Nvm le add?

 

Weapon adds a +% to your base attack from the weapon.
Armor AND Add both add All Resist +% based on Refinement level.
And IF you use a Shield as a Sub, the Refinement of the shield adds MORE All Resist +%.

 

Ohhh I understand noow, thank you for answeringg! ^^

 

Use shield for ur dw

 

Roger that, nama-samaaa