Items, Held items, #590
Eject Button flings for 30 power, a Held items item since Generation V
PokéAPI item 590 of 2,223, Held items category, Items pocket
Effect, in PokéAPI's words
Eject Button: “Held: When the holder takes damage from a move, it switches out for a party Pokémon of the Trainer’s choice.”
Held: When the holder takes damage directly from a move and does not faint, it switches out for another non-fainted Pokémon in its party, as chosen by the Trainer. This effect does not activate if another effect prevents the holder from switching out.
Games
Eject Button is listed in the text of 7 version groups, first in Generation V
Game index by generation
IIIIIIIVVVIVIIVIIIIX
Named in
Black and WhiteBlack 2 and White 2X and YSun and MoonUltra Sun and Ultra MoonLet's Go Pikachu and Let's Go EeveeSword and Shield