Equipment

are items that can be given to Yo-kai to raise and lower stats or produce other effects, to change or improve their capabilities in battle.

Wristbands
will give a Strength boost at the expense of Speed (or Defense for thsoe introduced in Yo-kai Watch 2). Yo-kai with a high enough Speed can ignore the stat drop from some of these items in exchange for the Strength boost. Alternatively, they can be given to slow Yo-kai with high Defense to boost their offensive prowess.

Rings
will give a Spirit boost at the expense of Defense, or boost attribute damage but lower defense against that same attribute. Yo-kai with a high enough Defense or resistance to the boosted attribute can make good use of these items.

Charms
are an Equipement series based around DEF.

The first set of Charms boost Defense at the expense of Spirit, or slightly lower Defense but boost resistance to a given attribute. The first kind is especially suited for Yo-kai with Strength-based attacks, which can ignore the Spirit drop.

In Japan, the Charms have the kanji emblazoned on them, which is replaced with eye-like designs in the English versions.

Badges
give a Speed boost at the expense of Strength. They are particularly ideal for offensively oriented Yo-kai with Spirit-based attacks and healer types, the latter which greatly benefit from being able to heal their allies more frequently.

Yo-kai-specific Equipment
These items can only be equipped by specific Yo-kai.

Others
This is a list of items that do not fit into any of the previous types and provide a variety of unique effects.