ユニーク装備 - cowz.io@Wiki

That is the Dreaming Steel Sterling Plate, a Unique exceptional armor item.
Item Statistics
Feature Details
Name Dreaming Steel Sterling Plate
Type Exceptional Armor
Armor 771
Quality +20%
Req Level 30
Item Level 54
Item Bonuses

1. 168-180% Increased Armor

20% Faster Stun Recovery

1. 83-100% Critical Hit Damage
2. 5-6 to Sword Mastery (unique)
3. 6-8 to Axe Mastery (unique)
4. 4-6 to Mace Mastery (unique)
5. 6-8 to Polearm Mastery (unique)

Regenerate 12 Life per second (unique)