Smart rings are small, wearable devices that can be worn on a finger, similar to traditional rings. They often include features like fitness tracking, heart rate monitoring, and sleep analysis. Many smart rings connect to smartphones via Bluetooth, allowing users to receive notifications and track their health data through dedicated apps. These devices are designed for convenience and style, often made from materials like titanium or ceramic. Some popular brands include Oura and Motiv, which offer various functionalities tailored to different user needs. Smart rings provide a discreet way to monitor health and stay connected without the bulk of larger wearables.