A wearable device is provided. The wearable device includes a clip type wearing part including at least two first and second openings, and a body configured to fit to and to separate from the clip type wearing part. The clip type changeable wearing part includes a safe mounting part which is formed to have a shape of covering a circumference and bottom of the first opening, and to which the body is fitted, and at least a portion of the second opening is opened in the safe mounting part.