Just like in the main RPG series, you can equip your Pokémon with held items. The ability to equip them is unlocked by following the tutorial quests and the items themselves can be found as rewards, in the shop for purchase and through other means.
These are different than battle items which can be used like skills and come with cooldowns.
How to upgrade held items
Items can also be upgraded up to level 30, which increases their stats and strength of their effects. While playing, you may earn Item Enhancers which can be used to level them up.
Full list of held items in Pokémon UNITE
Items below are listed in alphabetical order. Item effects are listed in upgrade order (level 1/level 10/level 20), while stat boosts are listed at minimum and maximum levels (level 1 – level 30).
Aeos Cookie
Item effect: When the Pokémon scores a goal, its max HP increases by (100/150/200)
Stat boost: 8 – 240 HP
Assault Vest
Item effect: When the Pokémon is not in combat, they are granted a shield that nullifies Sp. Atk damage equal to (9/12/15)% of their max HP
Stat boost: HP and Sp. Defense (Currently investigating)
Attack Weight
Item effect: When the Pokémon scores a goal, its Attack increases by (6/9/12)
Stat boost: 0.6 – 18 Atk
Buddy Barrier
Item effect: When the Pokémon uses its Unite Move, that Pokémon and the nearby ally Pokémon with the lowest HP are each granted a shield equal to (20/30/40)% of their max HP
Stat boost: 20 – 600 HP (lv 30)
Energy Amplifier
Item effect: After the Pokémon uses its Unite Move, the damage the Pokémon deals is increased by 7% for a short time
Stat boost: Currently investigating
Exp. Share
Item effect: While the Pokémon has the fewest Exp. Points on its team, it gains (2/3/4) Exp. Points per second. However, it will no longer receive shared Exp. Points when its teammates defeat wild Pokémon
Stat boost: HP and Movement Speed (Currently investigating)
Float Stone
Item effect: Increases movement speed by (10/15/20)% when the Pokémon is not in combat
Stat boost: 1.6 – 24 Atk and 0 – 120 Move Spd
Focus Band
Item effect: When the Pokémon drops to low HP, then each second for three seconds, it recovers (8/11/14)% of the HP it had lost
Stat boost: 2 – 30 Def and 0 – 30 Sp. Def
Leftovers
Item effect: When the Pokémon is not in combat, it recovers (1/1.5/2)% of its max HP every second
Stat boost: 16 – 240 HP and 0 – 9 HP Recovery
Muscle Band
Item effect: When basic attacks hit, the damage is increased by (1/2/3)% of the opponent’s opposing HP
Stat boost: 1 – 15 Atk and 0 – 7.5% Atk Speed
Rocky Helmet
Item effect: When the Pokémon receives a certain amount of damage, damage is dealt to nearby opposing Pokémon equal to (3/4/5)% of those Pokémon’s max HP
Stat boost: HP and Defense (Currently investigating)
Scope Lens
Item effect: Increases the damage of basic attack critical hits. The higher the Pokémon’s Attack, the more the damage increases
Stat boost: +0.4 – 6% Crit Hit Rate and +0 – 6% Crit Hit Damage
Score Shield
Item effect: While the Pokémon is attempting to score a goal, it is granted a shield equal to (5/7.5/10)% of its max HP and its goals cannot be interrupted while it is shielded
Stat boost: HP and Movement Speed (Currently investigating)
Shell Bell
Item effect: When the Pokémon hits with a move, it recovers a minimum of (45/60/75) HP. The higher the Pokémon’s Sp. Atk, the more HP it recovers
Stat boost: 1.6 – 24 Sp. Atk and +0 – 4.5% Cooldown
Sp. Atk Specs
Item effect: When the Pokémon scores a goal, its Sp. Atk increases by (8/12/16)
Stat boost: 0.8 – 24 Sp. Atk
Wise Glasses
Item effect: Increases Sp. Atk by (3/5/7)%
Stat boost: 10 – 39 Sp. Atk
Images extracted by Serebii.net