Poké Ball Plus lights up, vibrates, and plays sounds based on what you do in Pokémon: Let’s Go, Pikachu; or Pokémon: Let’s Go, Eevee; If a friend has a Poké Ball Plus of their own, they can help you catch and battle alongside you to make it a 2 player adventure; When you take your favorite Pokémon out with you in the Poké Ball Plus accessory, you can also gently shake it to hear the Pokémon inside; Connect Poké Ball Plus to the Pokémon GO; app and it will light up and vibrate when you’re near a Pokémon or Poké Stop