 This is it. This is the product pick of the week this week. It is the itsy-bitsy NRF 52 840 bolted to the side here I'm just running a ground and one input pin to the switch contacts there when I am listening to music on my phone and Then I suddenly need to pay attention to something. This is programmed to act as consumer control over Bluetooth LE to the phone Right, so you're rocking out to your tunes and then someone needs your attention something needs your attention Boom hit the big button that just sent Bluetooth radio wave you'lls across the ether into The phone watch the play button there It's playing It's pausing it's the itsy-bitsy NRF 52 840