in a vibrator unit , at least one piezoelectric vibrator is fixed on a base member in a cantilevered manner , such that a first region of the piezoelectric vibrator is fixed on a first face of the base member . a resin case is formed with a housing space extending through a first end face to a second end face thereof . the housing space includes a first housing part which opens to the first end face of the case , a second housing part which continues to the first housing part , and a third housing part which continues to the second housing part . in the first housing part , a part of the piezoelectric vibrator except for the first region is housed . the second housing part is defined by a first inner face extending in a first direction which is parallel with an extending direction of the piezoelectric vibrator , on which a first part of a second face of the base member which is opposite to the first face is bonded , and a second inner face extending in a second direction which is perpendicular to the first direction , on which a part of a third face which connects the first face and the first part of the second face is bonded . the third housing part is isolated from a part of the base member which includes a second part of the second face .