Abstract: A vibration piece includes a pair of base sections which are disposed with spaces in between each other, and a pair of vibration arms which are disposed between the pair of base sections. In addition, the vibration arms, respectively have three vibration areas of a pair of end areas positioned on both ends in an extending direction and a center area positioned between the end areas. Electrode pieces straddling from the side surfaces of the vibration arms to a main surface are disposed in the areas, respectively. An average width of portions of the electrode pieces positioned on the main surface which are disposed in the end areas is greater than an average width of portions of the electrode pieces positioned on the main surface which are disposed in the center area.