First of all, the structure of a watch is made up of many parts. Visually, we can mainly divide the main components of watches into two categories: externally visible components and externally invisible components. 1. Externally visible accessory watch mirror: protective surface (dial). Case: protects the movement of a watch (that is, a watch) from external dust, dew or vibration, while providing a fashionable and charming appearance for the watch. Divided into alloy shell, copper shell, steel shell, tungsten steel shell and other watchbands: there are two kinds of belts and metal chains. Ring mouth: there are two kinds of locking watches: one is fixed, which can provide beauty; Second, the one-way rotation type is mainly used for sports watches. As long as the 0 pointer is set to the minute hand, the overlapping time can be calculated. Bottom cover: used to fix the movement, dustproof and waterproof. Made of stainless steel. Words and patterns can be etched on the back, and there are generally three ways to assemble with the case: hinge screw locking, pressure locking and screw locking. Surface: Also called dial, it is mainly used to display time, which is related to the design of the watch. It can be designed into different shapes and materials, and the time scale can also choose simple lacquer printing or sudden printing. Watch hand: it is an important part to show time. There are generally three kinds of watches: hour hand, minute hand and second hand. There is no need to press the movement with the second hand. Handle: Also called crown, it is an important part to adjust the hour hand (time) and date (calendar), and it is mostly manual. Generally, copper plus electroplating or stainless steel is used. Watch buckle: mostly made of stainless steel and titanium. 2. External invisible rubber apron of accessories: used to prevent the influence and infringement of foreign substances and harsh environment (such as water, dust, cosmetics, temperature changes, etc.). Movement: The most important part of a watch is the "heart" of the watch. Its quality determines the quality of the watch. Choosing high-quality movement is very important for product quality. Second, the classification of watches At present, watches can be divided into mechanical watches and electronic watches according to the power source of the movement. 1, mechanical watch Mechanical watch is mainly driven by the clockwork in the movement, which drives the gear and then drives the pointer to move to achieve the purpose of timing. Mechanical watches can be divided into manual mechanical watches and automatic mechanical watches. Manual mechanical watch: manually wind the movement, turn the watch handle, and the spring in the movement releases energy to drive the watch to run. Automatic mechanical watch: self-winding movement, driven by the weight of Feituo in the movement. When the arm that wears the watch swings, it will drive Feituo to rotate, and at the same time drive the internal spring to wind the watch. Because the quality of watches is high or low, the movement in the watch is easily affected by gravity, so the travel accuracy of mechanical watches is generally not as good as that of electronic watches. 2. Electronic watches Electronic watches can be divided into digital timekeeping electronic watches, pointer timekeeping electronic watches, automatic quartz watches and optical power watches. Digital chronograph electronic watch: a watch that combines the piezoelectric effect of chronograph crystal and the display of bipolar tube liquid crystal, and its function is completely completed by electronic components. Pointer quartz watch: the quartz watch forms a bidirectional pulse signal through an integrated circuit, which drives the propulsion motor to rotate intermittently and drives the transmission gear train, so that the watch hands can accurately display the time. Automatic quartz watch: It combines the advantages of automatic mechanical watch and quartz watch. It does not need batteries, and the wearer can choose to wind it manually or charge it automatically. It uses the swing of the arm to drive the flywheel in the instrument to rotate to generate energy to push the internal micro-motor to convert it into energy, thus providing sufficient power for the timely device in the instrument, and the excess power will be stored by the micro-capacitor for later use. The work of that optical kinetic energy watch: firstly, the optical energy is convert into electric energy through a solar chip and stored in a recyclable titanium lithium ion rechargeable battery; Then, the electric energy generated by the battery generates a pulse signal to the coil through the integrated circuit, and generates a magnetic force to drive the stepping motor. The electric energy is converted into kinetic energy, which drives the gear to rotate and the pointer to indicate the time. Third, the maintenance of watches as a high-precision timing instrument and artistic decoration, the correct use and maintenance of watches is very important, which can prolong the service life and accuracy of watches and make your work and life more convenient. 1. Watch waterproof watches can be divided into diving watches, waterproof watches and waterproof watches. Please make sure that the watch is waterproof before buying and using it. The waterproof of the watch depends on the waterproof apron in the glass, back cover and handle of the watch, which is usually divided into 30 meters, 50 meters, 100 meters, 200 meters and 300 meters. The 30-meter (that is, 3 atmospheres) waterproof meter can be used for daily grooming or getting wet, and the 50-meter waterproof meter can be used for swimming and general housework. /kloc-professional waterproof rice over 0/00 meters can be used for underwater operations such as swimming and diving. However, before swimming and diving, please go to the watch repair station to test its waterproof degree. Any waterproof watch should not be exposed to hot water and steam (such as hot bath, sauna, etc.). ), because the waterproof apron of the watch will expand with heat and contract with cold due to temperature, accelerating aging. Or it is used in the environment with great temperature change, so that the moisture in the air in the table condenses, thus causing water intake and water mist condensation in the table. If this happens, please go to a professional watch maintenance department for cleaning and maintenance as soon as possible. The watch handle should be kept in the normal position, and the threaded handle should be tightened. When the handle is wet by water or dust, wipe it clean before pulling it out to prevent moisture from entering the dust. Never adjust the watch handle in water. The waterproof apron and watch handle (including waterproof apron) of the watch should be replaced regularly according to the use situation. 2. Travel time error Generally, the allowable error of mechanical watches is about 30 seconds to 45 seconds per day (both positive and negative), and the allowable error of quartz watches is 15 seconds to 30 seconds per month (both positive and negative). The specific error depends on the movement, environment and temperature used by different watches. If the quartz watch stops using or is not allowed to leave within one year because of the battery, our shopping mall promises to replace the battery for you free of charge. A double-pointer watch should set the time one minute faster, because the pointer will not move immediately after it is set and pressed into the watch handle. Watch should avoid contact with magnetic field, for example, if it is placed next to electrical appliances or magnetic objects that generate magnetic field, it may lead to inaccurate walking. Automatic mechanical watches and automatic quartz watches need to generate enough swing to wind up or charge capacitors when they are worn. If they don't wear or swing enough, the watch will stop. If you wear it again after stopping, you should wind it completely first. 3. Watches, watchcases, watchbands, sapphire glass, tungsten-titanium alloy and high-tech ceramics are all wear-resistant materials. Although these materials can resist wear, they can't withstand strong impact. At the same time, some substances with the same or higher hardness may damage these materials. Grindstone, sandpaper, nail polish, granite surface, concrete wall and ground all contain the above substances, which will scratch the surfaces of these materials. Case and strap need to be cleaned frequently in professional watch maintenance department because of sweat, dirt and so on. It will corrode the appearance of the watch and cause personal skin allergy. Similarly, the newly bought watch should tear off the protective film on the back cover, otherwise sweat will remain in the middle and corrode the back cover. Avoid contact with various chemicals (such as cosmetics, washing products, etc.). ), once in contact, it should be cleaned in time to avoid discoloration, shedding or other losses of the coating. 4, other matters The service life of the watch is related to whether the wearer will use and maintain the watch correctly. For example, wearing a watch to take a bath, the watch looks dirty, the strap is too long, and the use environment is bad, which will make the watch easy to be damaged and shorten its service life. Please be sure to bring valid certificates such as invoices and warranty cards when the watch is guaranteed. Therefore, it is necessary to properly keep the purchase vouchers, warranty cards and other documents. When there is a problem with the watch, especially when the battery runs out and the watch is flooded, it must be repaired in time to avoid damaging other parts. Maintenance should go to the special service center designated by the manufacturer, so as to ensure the quality. Fourth, the reasonable choice of watch jewelry can reflect a person's refined aesthetic taste and cultural accomplishment. The choice of watch jewelry should be based on clothing and keep the overall style consistent. People who often wear professional clothes should choose simple and generous watch jewelry and pay attention to overall harmony. If the combination of straight lines and blocks is simple, you should wear a watch with simple lines and simple panels, which will not be too dazzling on several straps. The combination of beaded or pendant necklaces and exquisite earrings can best reflect the skill and elegance of girls in the workplace. Evening dress, fur and other expensive or heavy fabrics, with watches, you can choose some famous watches made for inspection and inlaid with real gold, while some genuine jewelry and diamonds will look more noble and elegant. Casual clothes will be more interesting to wear quaint art jewelry, and watches can also choose fashion watches with more characteristics of the times to show their personality. Light and thin clothes such as silk are made of exquisite jewelry, and small, smart and thin watches can be worn, highlighting the gentle and delicate temperament. The choice of watch jewelry must pay attention to the coordination of modeling style and color. With watch jewelry, because of the consistency of color modeling, a coherent and unified ritual effect is formed. On formal occasions, choosing a set of jewelry commensurate with clothing can be grand and gorgeous; Many times, two-piece jewelry is the most popular. Appendix 1, Industry and Watch Wearing (Superstition: Changing Personal Luck) Culture, Education, Students, Teachers-Suitable for Wearing: Long Watch with Leather Strap. Slaughter, sculpture, hardware and machinery, craft, surgeon, obstetrics and gynecology-suitable for wearing: round watch with metal strap. Clothing industry-suitable for wearing: cloth belt long watch. Building, construction and decoration industries-suitable for wearing: square watches with metal straps. Doctors, researchers, and experimenters-long watches suitable for wearing: leather straps or crystal straps. Performing arts, photography, communication-suitable for wearing: irregular watch, diamond-encrusted strap. Furniture and automobile industry-suitable for wearing: square watch with leather strap. Electrical appliances, watch industry-suitable for wearing: oval watch with metal strap. Cosmetics and pharmaceutical industries-suitable for wearing: square round watches with metal straps (ceramic straps). Catering industry-suitable for wearing: square watches with metal straps. Flower shops and fruit shops-suitable for wearing: round and oval watches with crystal straps. Footwear-suitable for wearing: square and rectangular watches with sheepskin or cowhide straps. Appendix Source: China Zhouyi. The meaning of shape and color symbolizes kindness, easygoing, stability, good communication and loyalty to the people you love. The square symbolizes a serious attitude towards life, being able to be methodical and have leadership skills. The image of pear is characterized by sociability, heart shape and imagination, and it is the token of love. Oval symbol of outstanding personality, perseverance, suitable for quiet and enthusiastic people to wear olive image, extroverted, lively, insightful, pursuing the perfect image of water droplets, striving for progress, the meaning of color and strong adaptability red-vitality, health, enthusiasm, hope orange-excitement, joy, liveliness, gorgeous yellow-gentle, bright, happy green-youth, peace and solemn cyan-. A formal dress watch worn at work; Formal watches worn on business occasions; A time zone table for moving back and forth in different time intervals; A sports watch is used as outdoor sports equipment; A casual watch for daily leisure use; A jewelry watch is an indispensable outfit for social occasions.