Carry around Pokémon like a Tamagotchi
OK, the official Poké Ball Plus is a Switch controller for Let’s Go Pikachu/Eevee, which launched over four years ago. If you have Let’s Go or Sword/Shield, you can virtually pop a Pokémon into the controller and take them with you on walks and hikes to raise their experience points and capture items along the way. The controller also syncs via Bluetooth to your smartphone to play Pokémon Go without opening the app.
