STA + 3.
MaxHP + 600 and RES + 3 per 20 base STA of the user.
If the enchanted equipment is grade D, additional MaxHP + 1% and RES 1 per 20 base STA.
If the enchanted equipment is grade C, additional MaxHP + 1% and RES 1 per 20 base STA.
If the enchanted equipment is grade B, additional MaxHP + 1% and RES 2 per 20 base STA.
If the enchanted equipment is grade A, additional MaxHP + 2% and RES 2 per 20 base STA.