US Patent 9575466 Sensor-enabled fashion timepiece

In a general aspect, an ornamental jewelry piece, such as a watch, a ring or a bracelet, includes a sensor package. In some aspects, a timepiece includes a timepiece body having an interior surface that defines a cavity. The timepiece includes a sensor package and a movement in the cavity. The sensor package includes a sensor that monitors the user and a battery that powers the sensor. The movement operates independent of the battery in the sensor package. In some instances, the sensor package tracks fitness data based on motion detected by the sensor and generates an output to the user based on the fitness data.