Sneaky Ring of Slithering Silence

Jewelry Ring

Item Details

Utility 40
Bonus Level 23
Dyeable No
Sellable Yes
Tradeable Yes

Restrictions

Level Required Any
Usable By
All Classes

Magical Bonuses

Basic
Hit Points 40
Quickness 15
Stealth 4

Raw Item JSON

{
  "sell_value" : 40056,
  "bonus_level" : 23,
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "Raemilla" ]
    }
  },
  "flags" : {
    "dyable" : false,
    "emblemizable" : false
  },
  "icon" : 103,
  "utility" : 40.0,
  "delve_text" : " \nMagical Bonuses:\n- Stealth: 4 pts\n- Quickness: 15 pts\n- Hits: 40 pts\n \n \n \nBonus Level: 23\n",
  "slot" : 15,
  "artifact" : false,
  "material" : 0,
  "name" : "Sneaky Ring of Slithering Silence",
  "usable_by" : [ 0 ],
  "realm" : 0,
  "id" : 17345,
  "category" : 5,
  "bonuses" : [ {
    "id" : 19,
    "type" : 2,
    "value" : 4
  }, {
    "id" : 3,
    "type" : 1,
    "value" : 15
  }, {
    "type" : 4,
    "value" : 40
  } ],
  "ability_tags" : [ ]
}
How is utility calculated?