Most people think the quartz movement seems to be synonymous with cheap, but the adjective can not be applied to Seiko 9F movement, this super complex quartz movement, work fine, with an annual error of +/- 10 seconds, mainly loaded in the Grand Seiko watch, 9F is probably the best quartz movement in the world. Seiko in 1969 introduced the world's first quartz watch Astron, set off a revolution in the quartz watch, Swiss mechanical watch then entered a 20-year recession; Seiko 9F series quartz movement introduced in 1993, the goal is to become not only the most accurate timekeeping , But also the best time to show the quartz movement. 9F movement looks very refined, polished decoration is very gorgeous, chamfered polished plywood, surface decoration with unique Seiko stripes, polished and structural layout is like the traditional high-level mechanical movement in general. CAL.9F62 Mentioned before the annual error of only +/- 10 seconds --- This is usually the mechanical error of the day, so 9F is particularly accurate. But this standard is limited to entry-level 9F movement. In some limited edition luxury Seiko table using specially tuned 9F movement (dial has a special pentagram differences), the nominal error is even more rare ± 5 seconds / year. This very high precision first from the heart of quartz movement, quartz crystal oscillator. Seiko but can make all their own brand, they create their own crystal quartz, quartz seed in a special autoclave pot, slowly growing under high temperature and pressure. After that, the crystals were processed into quartz oscillators of the required size and then tested for 90 days. The best performing oscillator, designed for 9F movement use. 9F movement in order to accurately indicate the time, but also made a lot of special design: 1. Backlash automatically adjust the structure The gear that rotates the hour hand does not rotate without a "backlash." However, this "backlash" is the cause of the second hand vibration. Therefore, the 9F quartz watch will be equipped with a mechanical watch heart Department - hairspring gear and the gear responsible for rotating the second hand connected to the use of winding spring action "tooth gap" to minimize the second hand action neat indeed. Essentially a tiny spring attached to the second wheel to minimize the gap. 2. Twin Pulse control motor The quartz watch second hand to turn 1 step per second, 9F quartz watch second hand can turn 2 steps per second. Energy saving, but also with high GS drive GS than the average quartz watch coarser pointer, two-phase consideration decided to carry a double pulse control motor can be effective in 1 second to send two signals. Therefore, 9F quartz watch with the old 2 times the driving force, battery life up to 3 years. Of course, this two-step rhythm unaware of the naked eye, it seems only one step only. 3.3 axis guide wheel In addition, spacers are mounted on the minute and hour gears to ensure that they do not interfere with each other. The shafts of all three needles do not interfere with each other and become an independent structure. Therefore, when the pointer is moved, it will not interfere with other hands and achieve the goal of smooth operation. 4. Instant jump calendar 9F display accuracy extends to the date, which is an instantaneous jump calendar. Whether it is a weekday type or a single calendar type, it is an instantaneous bounce at midnight, 1/2000 seconds to complete. This mechanism is used to move with the minute hand to change gears on the sun led to the moment of rotation, and reverse the instant exchange of the spring lever, until the moment the cam reaches a certain position, the instant exchange lever release tightness, due to the power of the spring Instantly change the date. 5. Movement airtight structure All important parts of the movement are sealed in a dust-proof enclosure. Because the quartz watch is about 3 years to replace the battery, so the case is often open, the gear train with airtight cabin closed, both to avoid dust flying into, but also to prevent the proliferation of wheel lubricants. Look carefully, the exposed inductor is also sealed with a transparent material. In addition, 9F movement also has a temperature compensation adjustment mechanism, the internal temperature will be automatically detected, up to 540 times a day, when the temperature is below or above 25 degrees Celsius, it will start automatic compensation. Please note, 9F movement adjustment knob speed! All 9F movement is hand-assembled in the workshop of Seiko Epson "Takumi" (Mastery) Studio. The 9F movement can be said to include more cleverness and craftsmanship than mechanical movement in the same price range. Can be described as 'king of quartz'. Ningbo XISXI E-commerce Co., Ltd , https://www.petspetskitty.com
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