I. Timing Error
1. Under accurate usage conditions, mechanical watches typically allow for a timing error of about 45 seconds to 1 minute per day (positive or negative), while quartz watches have an error of 15-30 seconds per month (positive or negative). The specific error depends on the movement used in different models, the environment, temperature, etc. Fully automatic mechanical watches are also related to the wearer's level of activity.
2. If the battery power of a quartz watch is insufficient, it may cause the watch to stop or become inaccurate. In this case, the battery should be replaced promptly.
3. For analog quartz two-hand watches, when setting the time, it is recommended to adjust the hands one minute faster because the hands do not move immediately after pressing the crown back in.
4. Watches should avoid contact with magnetic fields. Placing them near appliances that generate magnetic fields or magnetic objects can cause inaccuracies or prevent normal operation. Examples include health devices, headphones, speakers, refrigerators, mobile phones, televisions, electric blankets, blenders, electronic mahjong tables, induction cookers, and bags with magnets. After demagnetization, mechanical watches will return to normal operation (most watch shops generally have demagnetizing tools); quartz watches will normalize automatically once removed from the magnetic field.
5. Automatic mechanical watches need sufficient movement to wind the mainspring while being worn. If left unworn or not moved enough, they may stop. It is recommended to shake the watch horizontally for about 1 minute before putting it down at night to supplement the winding, or manually wind it (usually 25-35 turns clockwise each time). This ensures normal operation. If the watch stops, fully wind it manually before wearing again.
II. Watch Crystal, Case, and Strap
1. Sapphire glass, tungsten titanium alloy, and high-tech ceramics are scratch-resistant materials. Although these materials are scratch-resistant, they are brittle and cannot withstand strong impacts. After all, toughness does not mean invincibility. Materials with similar or higher hardness may damage these materials. Abrasives, sandpaper, nail files, granite surfaces, concrete walls and floors, etc., contain such substances and can scratch the surface of these materials.
2. Leather straps, K gold, and platinum straps and cases are easily scratched by impact or improper handling. Additionally, water, air corrosion, and human sweat can cause varying degrees of damage. First, dry them quickly with a soft, absorbent cloth. Second, keep them well-ventilated, dry, and frequently clean and polish them to extend their lifespan.
3. Cases and straps should be cleaned regularly at professional watch brand repair departments. Sweat and dirt can corrode the appearance of the watch and cause skin allergies in some people. Similarly, new watches should have the protective film on the back cover removed; otherwise, sweat may remain between the layers and corrode the back cover. Avoid contact with various chemicals (such as cosmetics, cleaning products, etc.). If they come into contact, clean them promptly to prevent discoloration, peeling of the plating, or other damages.
III. Water Resistance of Watches
Watches can be classified in terms of water resistance as diving watches, water-resistant watches, and non-water-resistant watches. Please determine the water resistance of your watch before purchasing and using it.