The drill in the movement is not a real drill, but a artificial gem, mainly composed of alumina. This artificial gem has high finish, low friction coefficient and strong anti-corrosion ability, which plays a very good role in improving the quality of the movement and the * * when walking.

There is no direct relationship between the number of drills in the movement and the quality of the watch, but it is closely related to the size of the diameter. Generally, there are 25 drills in calendar watches. Some ultra-thin styles have fewer drills due to the omission of several gears. Some functional watches have complex structures, so they have more drills. Some brands add more decorative drills to the movement for decoration.

The three defenses of a watch are shockproof, antimagnetic and waterproof.

In the national standards, the standards of antimagnetic and shockproof performance are expressed by "residual effect", which refers to the instantaneous daily difference between the watch before detection and the watch after detection.

Shockproof: When the watch accidentally falls on the surface of a horizontal hardwood from a height of one meter, the residual effect of the quartz watch shall not exceed 2 seconds, and that of the mechanical watch shall not exceed 60 seconds.

Anti-magnetism: the watch is occasionally exposed to a strong magnetic field with the intensity of 4800A/m, and the residual effect of quartz watch is less than 1.5 seconds, that of mechanical men's watch (the movement area is more than 314 square millimeters) is less than 30 seconds, and that of mechanical women's watch is less than 45 seconds.

In Swiss-branded watches, the words SWISS MADE are written on the lower part or back cover of the dial, indicating that the watch is made in Switzerland. If there is the word SWISS MOVT on the lower part or back cover of the dial, it indicates that some parts of the watch are Swiss parts. Generally, it is common to assemble a quartz watch, which is not produced and assembled in Switzerland, but the movement of the watch is Swiss. The same is true for watches made in Japan. The above situation does not include counterfeit watches.

Chronograph

The chronograph uses additional hands other than hours, minutes and seconds to measure the elapsed time within two fixed moments (such as departure and arrival at the destination). The pointer is controlled by buttons on the side of the case, and performs the functions of starting, stopping and zeroing. The timing result is displayed on the timer attached to the dial, indicating the recorded time in minutes, half an hour or hours. A two-second-hand segmented chronograph is equipped with two seconds. After starting the timer, the second second hand can stop at will and measure different data, and then catch up with the advancing second hand to continue the timer.

perpetual calendar

The perpetual calendar watch is equipped with a special mechanical device, which can automatically adjust the calendar display according to the big month, the small month, the normal year and the leap year. This device can only last until 2100, because according to the Gregorian calendar (the current Gregorian calendar) formulated in 1582, there will be 3.12 extra days every 400 years. In order to balance this error, every leap year at the end of the century, if the first two digits of the year are not divisible by 4 (such as 21), it will be regarded as a normal year.

Moon phase display

Reproduce the moon's ups and downs every night, usually displayed as a moon phase disk in the window.

Three questions and a spring

A watch that tells the time by sound strikes the hours, minutes and minutes clearly by ringing a spring or ringing a bell. You can press the time lever to activate the spring striking function at will.

Tourbillon

Tourbillon installed in a frame, usually autobiography once every minute. The main purpose of this complex structure is to offset the influence of gravity on the balance balance wheel and increase the accuracy of timing.

Rebound display

The pointer displayed by the bounce does not rotate in a circle, but only advances in the arc-shaped limited space, and then jumps back to the starting point after reaching the end point.

Power storage display

This function shows the remaining energy of the watch spring and indicates the time when the movement can still run autonomously.

The watchband is divided into: ceramic band, metal band (tungsten-titanium alloy band, solid steel band, solid copper band, solid powder metallurgy steel band, steel sheet band, steel wire braided band, etc.), belt, nylon braided band, etc.

Ceramic watches are not easy to wear, allergic and beautiful.

In addition to wear resistance, all-steel watches also have the advantages of rust prevention, corrosion resistance, antimagnetic, high strength and environmental protection (it is not easy to cause allergies when wearing).

There is fog in the watch, which means there is moisture in the watch. Under normal circumstances, although the watch is sealed, there will be extremely fine pores at various joints on the watch case, especially the used watch has larger pores. In addition, in summer, the temperature is high and the humidity is high. If the watch suddenly gets cold, the air with more water in the watch will condense into fog or water droplets and stick in the watch glass.

In order to prolong the service life of the watch, you should try to prevent fog and water droplets from appearing in the watch. Don't wear the watch when washing your face, taking a bath and swimming. Don't be affected by hot steam in the kitchen, and pay more attention to avoid rain in rainy days.

The automatic watch is based on the general manual winding list, and an automatic component is added. The automatic components include an automatic lever and an automatic hammer. The automatic watches we sell are usually in a stop state when they go out of the counter. First, the salesman should help the customer wind up. Then, as long as the customer wears them for enough time every day, the automatic lever can replenish energy for the wind-up so that the automatic watch can run normally. We should advocate that the automatic watch should be wound by hand as little as possible, because manual winding requires a handle to drive many automatic wheels to rotate together, and the automatic components are very easy to wear and tear, which makes customers.

(1) Waterproof aprons are prone to aging and deterioration, so they should be replaced regularly or every time they are repaired.

(2) Damage to the watch glass can affect the waterproof performance of the watch. Always check it, and replace it in time if it is damaged.

(3) Don't operate the watch handle in water or when the watch is wet to prevent water from entering the watch machine.

(4) Push the head to the end after use, and pay attention to locking the head on the watch with no gap.

(5) The watch should be dried at any time when it gets wet.

(6) Prevent chemical substances from contacting the watch, otherwise it will affect the watch or waterproof apron and reduce the waterproof performance.

(7) Watch should not be placed in high temperature (+60℃) and low temperature (-10℃) environment for a long time.

(8) If there are aerosol spots in the watch, they should be removed in time to prevent the parts from rusting.

At present, the high-grade automatic watches on the wrist (such as Rolex and Omega) have been certified by the Observatory, and the average error range of the movement at the factory is required to be between -4 seconds and +6 seconds. On the contrary, manufacturers of famous watches focus on the materials used in the watch chain, which are generally precious metals, and the thickness is very thin. Manufacturers think that the consumer groups of famous watches are mostly specific people, and these people often own several watches, * which is mainly a symbol of identity, and they don't pay much attention to the accuracy of the watch itself, so most of them are two-needle watches, and they don't even have waterproof performance.

Depending on the movement and usage of quartz watches, the battery life varies from 1 to 2 years. If the second hand jumps abnormally, that is, every 4 seconds, it will remind you to replace the battery. If the battery is not replaced in time, it may cause the battery to leak and damage the internal parts of the watch.

We know that the waterproof function of watches mainly depends on the rubber waterproof apron fixed on the mirror, back cover and the junction between the crown and the case to form a seal and waterproof. Chlorine gas and perfume in the swimming pool will affect the aging of the waterproof apron and reduce its waterproof performance. According to experience, it is recommended that you * * send your watch to an authorized repair station every 1-2 years to test its waterproof performance.

Quartz watch battery replacement, mechanical watch will do waterproof test after cleaning and refueling. If it is detected that the watch is not waterproof, professionals will detect which part is not waterproof and replace it with new parts, so we can ensure that each waterproof watch has good waterproof performance after the back cover is opened.