A device that can be connected by technology with smartphone and Bluetooth (R) Low Energy, where you can play "Pokémon Go" without continuing to look at the smartphone screen.
Information such as Pokemon around and Pokestop is notified by lamp and vibration.
By pressing the button, you can try to capture Pokemon or get tools at Pokemon.
It can be used even when "Pokémon Go" is in the background, such as sleeping a smartphone.