We've been testing Nintendo's cute little Pokemon Go add-on. Here's the verdict.
Pokémon Go Plus Review - Review - Nintendo World Report
Pokémon GO Plus: glorified in-app purchase or worth the 35 bucks? - Phandroid
Nintendo Pokémon GO Plus + PMCAWNSAA - Best Buy
Pokémon™ GO Plus + - Nintendo Official Site
Pokemon GO Plus +
Pokémon Go Plus + is a handy way to go hands-free - Reviewed
Pokémon Go Plus Review - Review - Nintendo World Report
Pokemon Go Plus review: is Nintendo's first smartphone accessory worth the price?
Pokemon Go Plus - Nintendo Switch - 21613029
Pokémon Go Plus+ announced with Go and Sleep functionalities : r/TheSilphRoad
Pokémon™ GO Plus + - Nintendo Official Site
Nintendo Pokemon Go Plus : Electronics