A motion producing motion-based notification/alert device to be used in and for attachment to mobile electronic equipment or devices, where the motion producing motion-based notification/alert device, upon receipt of an electronic signal from the mobile electronic equipment or device, reacts to set the mobile electronic equipment or device into various elevations and motions. The motion producing motion-based notification/alert device is designed to receive electronic signals from the mobile electronic equipment or device, whereby producing various motions resulting in the owner or user of the mobile electronic equipment or device being notified/alerted that the mobile electronic equipment or device has received an incoming signal or a desired event of the mobile electronic equipment or device has taken place. The motion producing motion-based notification/alert device includes a housing containing a power spring/electric motor which can be used in or attached to the mobile electronic equipment or device.

A wristwatch having a sound-emitting device or alarm therein includes a watch case, a cover glass and a case back. The sound-emitting device is mounted in the watch case from the back side in a mounting opening formed in the watch case. The watch case is formed with a sound-emitting aperture on the top surface over at least a portion of the mounting opening of smaller size than the mounting opening.

An improved electronic alarm watch is disclosed having improvements in the structure and arrangement of the accoustically alarming vibrator employed in the alarm mechanism thereof. The improved watch of the above type comprises a watch casing, wherein is located a watch movement, alarm switch controlled thereby, alarm oscillator circuit and a battery source adapted for energization thereof. An oscillatory membrane is fixedly attached with a piezo-electric or electro-strictive element which is electrically connected through the switch with the oscillator circuit and the battery for being energized therefrom, the membrane being arranged in a space defined by and between a perforated back cover and the watch movement.

A watch with an electronic buzzer which comprises a double-constructed back cover including an inner back cover on which a piezoelectric element is mounted to produce a mechanical buzz sound when a voltage is applied thereto and an outer back cover provided with a plurality of small holes for enhancing transmission of the buzz. A driving circuit for actuating or energizing the piezoelectric element is disposed in the watch case releasably from the back cover and the piezoelectric element. This construction enables the watch to be made small in size and assures the watertightness of the watch.

A correction switching device for a wrist watch provided with an electronic buzzer, comprising a stem having at least three stable positions, and a setting mechanism and an electronic buzzer switch which are operated by said stem such that said setting mechanism is set in a time setting position when said winding stem is in one of said three stable positions and in an alarm setting position when said stem is in one of the other stable positions, and said electronic buzzer switch is set in the "off" position when said stem is at least in one of the stable positions other than that for time setting and in the "on" position when said stem is in the other stable positions.