Holo Caster is an item in the “Gameplay” category (Key Items).
In-game descriptions
| X / Y | A device that allows users to receive and view hologram clips at any time. It is also used to chat with others. |
|---|---|
| Sword / Shield | A device that allows users to receive and view hologram clips at any time. It’s also used to chat with others. |
Where to find it
Not placed on the atlas maps (so far: Red/Blue and Generation 3).
Sources : PokeAPI (items, item_flavor_text, machines) · atlas · pokeemerald species_info.h