Ringly smart rings are crafted with hand-cut semi-precious gemstones, joined to vibrating and light-emitting elements so they can signal to you.
To customize your Ringly ring, you download the app, and connect your ring to your phone. Then select which notifications—calls, messages, apps or people—that you want to come through to your ring. Each type of notification can be set to one of 4 vibration patterns and 5 light colors.
For more information: Ringly.