Watch case has two crowns, one of which can set the alarm time, when it will by a high-speed vibration of the hammer hitting the case back cover reminder time has come. From the internal structure, the alarm clock and alarm clock is almost the same. Its mode of operation can be divided into hitting the back cover, knocking the gong and tapping the substrate. The first is the installation of a watch in the back cover of a frets, when the hammer struck the frets, the sound can be transmitted to the bottom cover to produce sound, this is the most common alarm mechanism. Some of the noise table directly made the cover of the watch's back cover, and some in order to make the sound more pleasant melodious, the back cover will be made with a pronunciation hole. The way the percussion gong is struck is a sounding mechanism similar to that of a spring structure that produces a sound that is more crisp and sweet. Currently on the market are the design of this type have Breguet classic alarm, Blancpain leman gmt alarm table and plot the memovox and other watches. The method of striking the substrate is applied in both the reveil of Amy and cricket of vulcain. The alarm mechanism is equipped with an escapement mechanism in which the star gear drives the alarm hammer and the alarm pointer is fixed on the top of the time wheel. When the protrusions and pits of three different circles are aligned and combined Will start the alarm switch, through the exclusive alarm mechanism of the independent barrel energy, prompting the hammer swing, and then hit the table bottom cover of the sound column, metal resonance sound, the ringing ring tones according to the case Some slight changes in the material produced, there are manufacturers in the rear cover to install a total of sound boxes or bottom cover, so that the alarm sounds more loud. In the Swiss watch factory, there is a special good at making alarm clock, is the vulcain watch factory was established in 1858. In 1947 it pioneered the first mechanical watch with noise. In addition, Jaeger-Le-Land launched the first automatic watch with alarm function in 1956 to become the legendary history of the alarm watch. The Jaeger-LeCoultre took the lead in installing the automatic winding device in the movement. The crown at 2 o'clock serves as a snooze and adjusts the time, while the crown at 4 o'clock adjusts the time-of-day hand.
Printed Bedspread Set
Printed bedspread set
We have bedspread king queen ,tull ,twin ...different size
This bed spread set bedspreads,its 4 pcs/5pcs/6pcs... satin bedspread set,bedspreads set plain microfiber bedspread,black bedspread set,bedspread 10 sets
Its including duvetcover,bedspread,fittedsheet,pillowcase,you can customized printing design ,size,package,and the fabric can be cotton or polyester,velvet ,solid color....
bedspread king size set,bedspread bedding set,quilt bedspread set,quilts bedding bedspreads set,bedspreads set plain microfiber bedspread
Mukun(Nantong) Textile Co.,LTD , https://www.mukuntextile.com