Spellbound Cerulean Chain Leggings

Armor Chain Legs

Item Details

Utility 21
Bonus Level 10
Dyeable Yes
Sellable Yes
Tradeable Yes
Armor Info
Armor Factor 40
Base Quality 99%

Restrictions

Level Required Any
Usable By
All Classes

Magical Bonuses

Basic
Hit Points 16
Acuity 9
All Casting 1
ToA
Toa Power Pool 3%

Raw Item JSON

{
  "sell_value" : 5760,
  "type_data" : {
    "absorption" : 27,
    "base_quality" : 99,
    "clamped_armor_factor" : 40,
    "armor_factor" : 40
  },
  "sources" : {
    "stores" : [ "Alb Aurulite 20" ]
  },
  "bonus_level" : 10,
  "flags" : {
    "dyable" : true,
    "emblemizable" : false
  },
  "icon" : 3178,
  "utility" : 21.0,
  "delve_text" : "Realm: Albion\n \nMagical Bonuses:\n- Acuity: 9 pts\n- Power: 3 % of power pool.\n- Hits: 16 pts\n- ALL magic skills: 1 pts\n \n \nArmor Modifiers:\n- 40 Base Factor\n- 27% Absorption\n- 99% Quality / 70% Condition\n \n- Effective Armor:  37 Factor\n \n \nBonus Level: 10\n",
  "slot" : 7,
  "salvage_amount" : 15,
  "artifact" : false,
  "material" : 26,
  "name" : "Spellbound Cerulean Chain Leggings",
  "usable_by" : [ 0 ],
  "realm" : 1,
  "dye_type" : 0,
  "id" : 53611,
  "category" : 2,
  "bonuses" : [ {
    "id" : 10,
    "type" : 1,
    "value" : 9
  }, {
    "type" : 34,
    "value" : 3
  }, {
    "type" : 4,
    "value" : 16
  }, {
    "id" : 303,
    "type" : 2,
    "value" : 1
  } ],
  "ability_tags" : [ ]
}
How is utility calculated?