Ringly, a startup that graduated from the PCH incubator, launched its initial line of Bluetooth-connected jewelry -- four rings that extend your smartphone's notifications to your hand. The rings, which will sell for $195 at retail ($145 during the pre-order period) tie into an app that lets you set notification settings for different people and apps. So your ring could vibrate when your mom texts or flash red when you get a direct message on Twitter. Supported apps include Instagram, Twitter, Facebook, LinkedIn, Poshmark, Tinder, and Uber. The rings will ship in the fall.