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Daily watch maintenance and watch knowledge: 1、 Please do not bring the watch and magnetic objects close to each other; 2、 If there is water ingress (air), it should be immediately sent to a maintenance point for cleaning to prevent the movement from rusting; 3、 If there are protective sheets or labels attached to the back of the watch, please remove them before use, otherwise sweat will seep into the backing paper, causing rust on the back of the watch; 4、 Do not expose the watch to various solvents and chemicals, as the watch case and strap may discolor or rust due to corrosion; 5、 Watches (limited to quartz watches) can operate stably and accurately within the range of 5 ° C to 35 ° C at room temperature. Temperatures exceeding 50 ° C can cause battery leakage or shortening Battery life. Do not place the watch in a low-temperature -10C environment for a long time, as cold air can cause the time to run slowly or quickly. When the watch returns to room temperature, it will operate normally; 6、 Watches can be divided into diving watches, waterproof watches, and non waterproof watches based on their waterproof performance. The waterproofing of a watch relies on the waterproof rubber rings on the glass, back cover, and handle to meet corresponding standards, which are divided into different levels: (1) SWEAT-RESISTANT: It is very easy to understand and only prevents sweat from running into the watch; (2) WATER-RESISTANT: It means it's okay to occasionally come into contact with water. For example, if you accidentally spray water on your own hands while watering a flower, you don't have to worry about picking it off and wiping it clean. In short, it's to prevent accidental small splashes in daily life; (3) 30 meter waterproof (30M, 3ATM, 3BAR): A watch with the word "30M" on it is a waterproof watch that can be used for daily grooming or in the rain, but mainly to prevent the movement from being damaged by dust and moisture. 30 meter waterproof, according to professional explanations, can withstand a pressure of 3 kilograms per square centimeter, which is equivalent to the pressure of 30 meters of water depth and 3 atmospheres of pressure in a static state For us ordinary consumers, we only need to remember that 30m is the most basic and basic waterproof meter; (4) 50 meter waterproof (50M, 5ATM, 5BAR): A watch with the word "50M" on it, also known as a 50 meter waterproof watch, is the true meaning of a waterproof watch in the minds of consumers. It can be used for swimming and general household waterproofing. Remember not to adjust the handle in water; (5) Diving watches (100 meter waterproof, 200 meter waterproof, 300 meter waterproof, etc.) are professional waterproof watches that can be used for underwater work such as swimming and diving. Kind reminder: 1. Any waterproof watch should not be carried in contact with hot water or steam (such as taking hot baths, saunas, etc.); 2. Try to avoid using in environments with large temperature changes, as temperature differences can cause condensation of moisture in the air inside the watch, leading to water ingress and water mist formation inside the watch. If there is fog inside the watch, please go to a professional watch repair department for cleaning and maintenance as soon as possible; 3. Watches are precision instruments, please take good care of them when using them. Good usage habits can increase the lifespan of your watch, while bad habits can shorten its lifespan.