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The Pokémon Company officially revealed Pokémon: Let’s Go, Pikachu! and Let’s Go, Eevee! alongside a new Poké Ball Plus peripheral that got more details on its official website. Here’s how it works with Let’s Go, Pikachu! and Let’s Go, Eevee!:
Poké Ball Plus works like a Joy-Con™ controller with the Pokémon: Let’s Go, Pikachu! and Pokémon: Let’s Go, Eevee! games for Nintendo Switch™. Move, battle, navigate menus—you can do it all with your Poké Ball Plus.
Catch Pokémon
Poké Ball Plus has motion control capability, so when a wild Pokémon appears, ready a Poké Ball and try to catch the Pokémon by moving your Poké Ball Plus like you’re throwing it.
Lights, sounds, action!
When you catch a Pokémon, your Poké Ball Plus will light up and vibrate in your hand, and you’ll hear the Pokémon let out its unique cry—you’ll think there’s really a Pokémon inside!
Take your Pokémon wherever you go 
Take your Pokémon for a stroll in your Poké Ball Plus out in the real world. When you’re out and about, you can gently shake your Poké Ball Plus and the Pokémon inside will make a sound* and the Poké Ball Plus will vibrate.
Here’s how it works with Pokémon GO: Search for Pokémon without looking at your smartphone 
Play Pokémon GO without checking your smartphone screen. When a Pokémon appears nearby, Poké Ball Plus will light up and vibrate. A simple button press lets you throw a virtual Poké Ball, and different LED light patterns will let you know if you’ve caught the Pokémon. As long as your Poké Ball Plus is connected to your smartphone and the Pokémon GO app, it will also count your steps so you can hatch Eggs and get Candy for your Buddy Pokémon. To see if your smart device is compatible with Pokémon GO, check out the official website.
Product Details 
Name: Poké Ball Plus On sale: Available November 16, 2018 Package contents: Poké Ball Plus, USB charging cable, warranty Size: 48mm diameter (not including protruding parts) Weight: Approx. 65g Internal battery: Lithium Ion 220 mAh*
*Battery is not removable. If replacement is necessary, it can be replaced through the Nintendo service center (online) for a fee.
Battery Life: Approx. 3 hours. (can be charged using the Nintendo Switch AC adapter HAC-002) Sensors: Accelerometer, gyro sensor Other functions: Vibration, sounds Sold by: Nintendo
