Quartz watches are one of the watches. Quartz watches use quartz crystals on watches and watches to make use of periodic and continuous "vibration" crystals to bring us accurate time. It's a modern invention.
Attention should be paid when purchasing
The error of quartz watches is generally (+15 seconds/month). The travel time of quartz watches is driven by battery energy. The life of batteries varies from 12 to 24 months depending on the movement of the watches. When a good core runs, the battery life will be longer. So choosing a good brand, the brand of the machine core is also very important.
Whether it has waterproof performance, waterproof performance? Generally, it can be seen that the back cover of the watch is not waterproof if it is not marked; sweat-resistant means sweat-proof function; water-resistant means general waterproof; the national standard of waterproof watch is to withstand two atmospheric pressures, i.e. 20 meters of water depth without water, and 30 meters of water-proof means that the watch can withstand three atmospheric pressures, and so on. Of course, this standard requires experimental conditions, that is, the temperature is kept between 20 and 25 degrees Celsius and the watch and water are stationary.
Watches have different mirrors, case and strap. Watches of different brands use different materials. Some businessmen often say that their watches are sapphire glass mirrors, but the hardness of sapphire glass is also different, which can be divided into Mohs 9, 8, 7, the higher the harder. And although this material can make wear, but can not resist impact, encounter higher hardness material, will also damage the mirror surface, it is best to ask clearly when purchasing.
Watches generally have a certain anti-seismic function, when purchasing must ask whether there is anti-seismic, anti-magnetic function.