If held by a Pidgeot (or is present in the player's Bag)PE, allows it to Mega Evolve into Mega Pidgeot if its Trainer has a Key Stone. Each Trainer can only Mega Evolve one Pokémon per battle.
Unaffected by item negating effects (such as Embargo and Klutz). Item manipulating effects (such as Trick and Fling) cannot give Pidgeot a Pidgeotite or remove a Pidgeotite from Pidgeot.
Outside of battle
If held by a Pidgeot, allows it to Mega Evolve into Mega Pidgeot when it performs a Spectacular Talent during a Pokémon Contest Spectacular while its Trainer has a Key Stone. Pidgeot will remain a Mega Pidgeot until the Talent Round ends.
The player can obtain the Pidgeotite by reaching Trainer Rank 12.
The Pidgeotite was also available as a prize during the Mega Pidgeot Competitive Stage. This Competitive Stage ran on the Nintendo 3DS and Mobile versions from October 11 to 18, 2016.
The Pidgeotite enables the following Mega Evolutions: