Following the recent discovery of Meltan, The Pokémon Company International, Niantic and Nintendo have revealed more information on this new Mythical Pokémon and how it can be captured in Pokémon GO and transferred to Pokémon Let’s Go Pikachu and Let’s Go Eevee. Pokémon GO players will be able to assist Professor Willow’s ongoing investigation into Meltan with the introduction of new Special Research tasks coming to the app this winter. Generally, sending Pokémon from Pokémon GO to Pokémon Let’s Go Pikachu or Let’s Go Eevee will result in players receiving certain items in the app. However, the first time players send a Pokémon from Pokémon GO to the Kanto region in Pokémon Let’s Go Pikachu or Let’s Go Eevee, they can receive a special item known as a Mystery Box.
Once the Mystery Box is opened in Pokémon GO, Meltan will begin to appear in the game, and players can attempt to catch it in the same way as any other Pokémon. When Meltan has been caught, it can then be transferred to a GO Park in Pokémon Let’s Go Pikachu or Let’s Go Eevee. Players can also get a Mystery Box for sending Pokémon to a friend’s Pokémon Let’s Go Pikachu or Let’s Go Eevee game. After it has been used, the Mystery Box will close and can only reopen again after a set time, at which point the player will need to send a Pokémon to their own or a friend’s copy of Pokémon Let’s Go Pikachu or Let’s Go Eevee. Pokémon Let’s Go Pikachu and Let’s Go Eevee will be available exclusively for Nintendo Switch on November 16, 2018.
Source: 【公式】ポケモン情報局 @poke_times