Mechanical watches as precision mechanical timing instruments and decorative items, must have both practicality and decorative. Good quality and accurate time to go, easy to use, fine technology, beautiful appearance, on the foot of the clock can be more than 36 hours continuous walk, durable, some watches also have a waterproof, shockproof, antimagnetic properties. Fake watches are generally sold through non-normal channels. Its features are: a beautiful appearance as a bait, and the use of poor quality plastic machine within the machine, the production process rough "rough horse" watch movement, machining poor assembly of poor quality movement, posing as domestic or imported watches Sales, the error of travel time, short life. Identification of counterfeit watches need to have some experience, the average consumer is difficult to identify its authenticity. In order to avoid buying fake watches, consumers should carefully identify the trademark at the time of purchase, especially some famous brand-name trademarks. Can also be based on some of the model features (such as the top handle sealing device, calendar dial device, the back cover screw structure, etc.) to identify the authenticity. Should try to choose some better quality, there are parts maintenance grade models (domestic such as Z1, Z, series, KLC, LSS series, such as imported ETA2750, ETA2851 series, 371,2660 series, etc.). Mechanical watch purchase should note the following: 1. Exterior. Visual shell, surface, needle, no "trachoma", scratches, bright coating, no color, the back cover should be tight at the juncture. 2. Starting performance. Slowly rotate the winding handle on the winding, while observing the second hand, the second hand to make the general rotation of the less the number of rotation, the better the performance of the table start. 3. On the article. The feeling when the article should be relaxed, no noise. In addition to automatic slip on the table after the phenomenon of slippery, the general watch clockwork should be able to foot enough, do not slippery. 4. Dials. When dial needle feel should be comfortable, too tight or too loose are poor. The hour and minute hands should be coordinated (when the hour hands are respectively aligned with 3, 6, 9 and 12 characters, the minute hand shall not deviate from 12 characters ± 4 points). 5. Phonetic. Watches on the clock, the ear phonogram, should be clear and symmetrical without noise, and does not change with the direction of change. 6. Travel time accuracy. Need to use special equipment measured, some large state-run shops for customers Valet business, when you can choose to shop sales staff to detect when the accuracy and location error