a housing including conductive portions, wherein the conductive portions include a first conductive portion and a second conductive portion forming at least a portion of a side surface of the housing;

a display visually exposed to an outside through at least a portion of the housing;

a communication circuit electrically connected to the conductive portions;

a sensor electrically connected to the conductive portions;

a first blocking circuit connected between the conductive portions and the communication circuit and configured to block a signal in a first frequency range;

a second blocking circuit connected between the conductive portions and the sensor to block a signal in a second frequency range; and

a processor operatively connected to the display, the communication circuit, and the sensor,

wherein the first conductive portion and the second conductive portion are configured to operate as an antenna of the communication circuit and a biometric electrode of the sensor, and

wherein the side surface includes electrically insulating portions arranged between the first conductive portion and the second conductive portion and electrically insulating the first conductive portion from the second conductive portion.