An electronic device comprising: a first watch module including: - a first body, - a watch movement located in the first body, - a first window connected to the first body, - a watch hand located between the watch movement and the first window, connected to the watch movement, and adapted to receive driving power from the watch movement, and - a first display located between the first window and the watch hand; and a second watch module including: - a second body extended from the first body, - a circuit board located in at least one of the first body and the second body, - a second window connected to the second body and formed integrally with the first window, and - a second display connected to the circuit board, wherein the first body and the second body form a bending so that a direction which the first window faces outwards is different from a direction which the second window faces outwards, and are communicated to each other, wherein the first display is configured to operate in one of display states including: - a first display state in which the watch hand is projected through the first window and information is displayed on the first display, - a second display state in which the watch hand is projected through the first window but information is not displayed on the first display, and - a third display state in which the watch hand is not projected through the first window and information is displayed on the first display. a first watch module including: - a first body, - a watch movement located in the first body, - a first window connected to the first body, - a watch hand located between the watch movement and the first window, connected to the watch movement, and adapted to receive driving power from the watch movement, and - a first display located between the first window and the watch hand; and - a first body, - a watch movement located in the first body, - a first window connected to the first body, - a watch hand located between the watch movement and the first window, connected to the watch movement, and adapted to receive driving power from the watch movement, and - a first display located between the first window and the watch hand; and a second watch module including: - a second body extended from the first body, - a circuit board located in at least one of the first body and the second body, - a second window connected to the second body and formed integrally with the first window, and - a second display connected to the circuit board, - a second body extended from the first body, - a circuit board located in at least one of the first body and the second body, - a second window connected to the second body and formed integrally with the first window, and - a second display connected to the circuit board, wherein the first body and the second body form a bending so that a direction which the first window faces outwards is different from a direction which the second window faces outwards, and are communicated to each other, wherein the first display is configured to operate in one of display states including: - a first display state in which the watch hand is projected through the first window and information is displayed on the first display, - a second display state in which the watch hand is projected through the first window but information is not displayed on the first display, and - a third display state in which the watch hand is not projected through the first window and information is displayed on the first display. - a first display state in which the watch hand is projected through the first window and information is displayed on the first display, - a second display state in which the watch hand is projected through the first window but information is not displayed on the first display, and - a third display state in which the watch hand is not projected through the first window and information is displayed on the first display.