Oak Items are special items either given to the player by Professor Oak or purchasable from shops as they progress through the game. These items act as upgrades to the player's account when equipped.
Each Oak Item buff different properties in game, and can be upgraded with constant use. Players start out with one slot that can be used to activate an Oak Item. As players catch more Pokémon, more slots are unlocked. They are as follows:
Oak Items are gained by playing through the game and capturing unique Pokémon, with the exception of the Squirtbottle, Sprinklotad, Explosive Charge, and Treasure Scanner, which can be bought from select cities.
List of Items
|Name||Unique Pokémon Required|
|Squirtbottle||Bought at Goldenrod City for 5,000|
|Sprinklotad||Bought at Mauville City for 10,000|
|Explosive Charge||Bought at Cinnabar Island for 5,000|
|Treasure Scanner||Bought at Cinnabar Island for 10,000|