Real watches are made of high-end materials, and the texture feels even. Fake watches are made of cheap materials, which makes them feel lighter.
Through careful observation, we can see the clue of counterfeit goods.
It can be directly identified by querying the product's security code.
The manufacture and production of watches are based on a simple and witty invention, that is, "clockwork", which can tighten and store energy, slowly release energy to push the running devices and hands in the watch, and achieve the function of displaying time. This spring device in the watch is called the mainspring. Watch structure A watch consists of a meter head and a strap (clasp). Among them, the parts of the rice head include: movement, case, bottom cover, mirror, characters (often called dial), hands, handles (also called push) and order (required by some tables).
The working principle of watches, watches are precision instruments used to display time. The principle of this instrument is to use a vibration system with constant period and continuous vibration as the standard. If we know the time (vibration period) required for a vibration system to complete a complete watch vibration and calculate the vibration times, then the time after so many vibrations is equal to the vibration period multiplied by the vibration times. That is, time = vibration period × vibration times.
The mechanical watch with balance shaft hairspring adopts balance spring as vibration system. The balance wheel 1 is fixed on the balance shaft 2, and the upper and lower journals of the balance shaft are sleeved in the bearing and can rotate around the bearing. One end of the hairspring part 3 is fixed on the swing shaft, and the other end is fixed on the splint. Due to the elastic deformation of the hairspring, the motion of the balance wheel changes from rotation to reciprocating motion. The balance hairspring system is affected by bearing friction, air resistance and internal friction of hairspring, and the swing amplitude (amplitude) will gradually decay until it stops. In order to make it vibrate continuously without attenuation, it is necessary to replenish energy to the hairspring system regularly, that is to say, there must be an energy device in the watch. The periodic energy supplement of vibration system is realized by a special mechanism & escapement mechanism. The escapement mechanism is also used to calculate the vibration time of the hairspring system. Therefore, the hairspring system and escapement mechanism are the key devices of mechanical watches.
mechanical watch
Timing instruments of mechanical vibration system, such as pendulum clock, balance wheel clock, etc. Its working principle is to use a vibration system with constant period and continuous vibration. The vibration period multiplied by the vibration times equals the elapsed time, and the time = the vibration period of the watch × the vibration times. Generally, it consists of energy source, gear train, escapement mechanism, vibration system, pointer mechanism and additional mechanism. Power-clockwork device or heavy hammer, which provides energy for the work of mechanical clock. By increasing the speed of the gear train, a winding can run continuously for many days. The escapement mechanism makes the timing frequency of clocks conform to people's concept of "second". The rudder or balance wheel controls the speed of the clock, and the time-telling mechanism tells people what time it is.
electronic watch
The basic part consists of electronic components. The working principle of electronic clocks is designed according to the physical phenomenon of "electricity generates magnetism, and magnetism generates electricity". That is, electric energy is converted into magnetic energy, and then magnetic energy is converted into mechanical energy to drive the hour and minute hands to run, thus achieving the purpose of timing.
Transistor balance table
It uses dry battery as energy source, transistor as switch and hairspring as oscillation system.
quartz watch
The oscillator adopts a timing crystal, and the electronic frequency division control motor drives the pointer, which has high travel accuracy. Electronic watch. This is a watch that combines electronic movement and timely movement, and has electronic display and pointer walking indication at the same time. This kind of movement is T250 movement of Citizen Mi Yue Tower Co., Ltd.
Light wave meter
The optical kinetic energy radio meter receives the "standard time" radio waves emitted by the transmission tower through the built-in radio receiver and antenna of the watch, obtains data such as time and calendar, and automatically corrects the time and date of the watch. The standard time signal adopts the theory of high-precision cesium atomic table, with an error of one second in one hundred thousand years. Citizen's radio meters all adopt the technology of light kinetic energy, any visible light source. As long as there is light, there is energy, and as long as radio waves can be received, there will never be errors.
Electronic paper watch
Electronic paper watch is a watch equipped with electronic paper display screen, which can display time, week and date. The main ways to realize electronic paper technology are cholesterol liquid crystal display technology, electrophoretic display technology (EPD) and electrowetting display technology. The electronic watch paper applied to electronic paper watches mainly adopts electrophoretic display technology. The display brightness and contrast of electronic paper meter are high, so there is no need to use backlight to improve readability. The electronic paper display screen used in electronic paper watches has a simple hardware structure and the thickness can reach about1mm. It is a new force in the army of watches.
diving watch
The so-called diving watch, as its name implies, refers to a waterproof watch used for diving. Ordinary waterproof watches cannot be used for diving. Diving watches must abide by strict regulations, and they cannot be called diving watches just because they are waterproof enough. The standard waterproof performance of diving watches should reach at least 100m water depth; The bezel has an outer ring, which can rotate in one direction to measure the diving time; Divers are often in dark water, so the pointer, scale or surface of diving watches usually need to be coated with fluorescent materials to make it easier for users to read the time.