In a time-piece dial wherein the hands as well as one or more of the indicia are marked with luminous paint, readability in darkness is improved by using paints luminescing in different colors for each of the two hands and by distinguishing at least one of the markers from the remainder of the markers through the use of suitable luminescent paints.

Water proof watches with gold exterior comprise heavily gold-plated stainless steel case bodies.

A universal watch wherein the hour hand may be corrected incrementally by an hour or less in response to the pushing, pulling or turning a stem or shaft.

A watch case resistant to mechanical defacement and corrosion having an external pressed and sintered component at least a part of which comprises TiN with Ti in combination with at least one material selected from the group consisting of Mn, Al, and V as metallic binders.

A camera is detachably attached to the central portion of the rear end of an apparatus main body of a personal computer and positioned between a pair of hinge portions. A lens is provided at the camera main body of the camera and this camera main body is rotatably arranged about the axis of the camera main body substantially coaxial with the rotation axis of a display unit. When the camera main body is detached from the apparatus main body, the camera is connected to the apparatus main body thro...