The Banettite (Japanese: ジュペッタナイト Juppetanite) is a type of held item introduced in Generation VI. It is a Mega Stone associated with Banette.
If held by an Banette, allows it to Mega Evolve into Mega Banette 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 Banette a Banettite or remove a Banettite from Banette.
If held by an Banette, allows it to Mega Evolve into Mega Banette when it performs a Spectacular Talent during a Pokémon Contest Spectacular while its Trainer has a Key Stone. Banette will remain a Mega Banette until the Talent Round ends.