Abstract: A mechanical clock having wireless manipulation and adjustment function includes a remote controller and a mechanical clock. The mechanical clock has a reception circuit board for receiving a wireless signal emitted by the remote controller to drive a motor to rotate. The motor then jointly leads a gear set to drive a hand of the mechanical clock to rotate. The remote controller can manipulate the alarm ring setting of the mechanical clock. The remote controller can be used to turn on or off the alarm ring timing function and the snooze function, and set the time of an alarm ring timing hand. A user can thus use the remote controller to manipulate related settings of the mechanical clock to facilitate the manipulations thereof.

Abstract: An alarm clock comprises a seat, a switch, a light emitter, a light guiding plate, a light shielding layer, a timer, a transparent mask, a frame, and a power source. The timer is installed in the seat and drives a rotary shaft to pass out through the light shielding layer and the light guiding plate to be connected to indicators. The surface of the light guiding plate is arranged with scales and numeral indicators. A frame is fixed at a periphery of the seat, and after the light guiding plate and the light shielding layer are positioned, a transparent mask is connected to the inner side of the frame. The seat supports a light emitter and a light emitter switch which are connected with one another. The switch is connected to a power source. Pressing the lateral side of the transparent mask operates the light emitter switch.

Abstract: A rotatable LCD screen device includes a substantially rectangular LCD screen unit which has a length and a width and which includes a front display side and a back side, and an upright support which is connected rotatably to the back side for rotation of the LCD screen unit about a horizontal axis substantially perpendicular to the plane of the front display side so as to place the LCD screen unit in a first position where the length lies horizontally, or a second position where the length extends vertically. A lock mechanism is provided on the back side and the support for locking the LCD screen unit against movement relative to the support when the LCD screen unit is in the first position or the second position. In addition, a limiting mechanism is provided for limiting the angle of rotation of the LCD screen unit relative to the support.