9. Why don't the long-term use of quartz watch battery will regularly change?
A: quartz watch battery generally work time is about two years, with a calendar week, moon and stars, such as the attachment table, travel time may be shorter. So even if the place don't have to keep 2-3 years to replace a battery, or batteries are prone to leakage, electrolyte can produce corrosion to the circuit board, so watch scrap.
10. Mechanical watches why maintenance regularly?
A: mechanical watches, after long-term use of environmental pollution, moisture, erosion, the movement of the internal operation of dry metamorphic effect lead to wear and lubricating oil watch parts wear corrosion, work properly. So regular cleaning and maintenance, can make the machine core recovery factory, keeping the original flexible lubrication and tight.
11. K gold is represent?
A: K gold on behalf of the king's composition, generally do table K gold points, 18 K gold and 14 K gold. According to 18 k gold composition of seventy-five percent, twenty-five percent for other metals. The composition of 14 k gold is fifty-five percent, forty-five percent of the other metals.