For high-end watches, it is recommended that they undergo corresponding maintenance every two to three years. This includes replacing waterproof components, testing the timekeeping performance and power consumption of the movement, cleaning the movement, and maintaining the appearance. Such maintenance services will effectively extend the service life of your watch. When wearing a watch, the sweat on your hand is corrosive to the case. The all-steel case, being a nickel-chromium alloy, has better corrosion resistance. The half-steel case, which is made of copper, is prone to corrosion when in prolonged contact with sweat. Therefore, it is advisable to frequently wipe off the sweat with a soft cloth or use a plastic watch support to prevent it from being eroded by sweat. (2) Do not open the back cover of the watch at will to prevent dust from entering the movement and affecting the normal operation of the watch. (3) Do not place your watch in a wardrobe with mothballs to prevent the watch oil from deteriorating. (4) Do not put your watch on power amplifiers, steros or televisions to avoid magnetization. (5) For watches that are not worn for a long time, the mainspring should be wound once a month. For watches with automatic movements, they should be gently swung back and forth for a few minutes or worn on the wrist for a period of time to wind the mainspring automatically. To prevent the parts from remaining stationary for a long time and ensure the operational performance of the watch movement. (6) If a regular mechanical watch gets damp, you can press dry cotton onto the watch and then bake it with a 40-watt light bulb for 5 minutes. All the moisture inside the watch will be evaporated. If a quartz electronic watch gets damp, take several small pieces of calcium chloride and wrap them in gauze. Then open the cover of the electronic watch, put the wrapped calcium chloride and the electronic watch together into a non-leaking plastic bag or glass bottle, and seal it. It usually takes about three hours to remove the moisture and restore the electronic watch to normal. For watches that are severely damp, the moisture absorption time can be appropriately extended. (7) When you receive a beloved watch and remove the outer packaging, be sure to keep the protective box used for the watch well. These packaging boxes for protecting watches can provide the safest protection for the watches when they are not worn, preventing them from being dropped or bumped. Therefore, it is absolutely necessary to keep the packaging boxes. It is also recommended to develop the habit of putting the watches in the boxes when they are not worn on a daily basis, which can greatly reduce the probability of damage to the watches. (8) It's best not to wear the same watch every day on a regular basis. Instead, prepare several different watches and alternate their use. This not only enriches your personal style but also prevents dust and body dirt from concentrating on the same watch. For leather watch straps, extra care should be taken to avoid frequent wear and tear due to daily use. Even if the surface looks new, the watch will still look very old. (9) Wearing a watch on your wrist while sleeping, if it is a luminous watch, will have adverse effects on your body. This is because the luminous material coated on the hands and dials of luminous watches is mainly a mixture of radium and zinc sulfide. The rays emitted by radium can excite zinc sulfide crystals to emit light. When sleeping, if one wears the watch, the human body will be exposed to radium radiation for eight to nine hours, which is harmful to the human body. Therefore, before going to bed, it is best to take off the luminous watch and put it on the table. (10) Crystal refurbishment. After the watch crystal is scratched with many lines, you can first drop one or two drops of water on the crystal, then squeeze a little toothpaste and rub it. This can remove the scratches and make the crystal look as good as new. Note: Identification of copper watch Cases Watch cases can be classified into gold cases, steel cases, aluminum cases, copper cases, titanium cases, alloy cases, plastic cases, wood cases, etc., based on their materials. In our daily life, the watches we come into contact with, use and choose the most are those with all-steel cases and straps. But people may not know that many watches that claim to have all-steel cases actually have copper cases. Copper cases (including straps), also known as semi-steel cases, have a manufacturing cost several times lower than that of all-steel watches, offering a greater profit margin. Therefore, many merchants will make a big fuss about this point, "passing off copper as steel" and using extremely low prices as bait to attract buyers' attention. Therefore, here is a brief introduction to the methods to distinguish between all-steel watches and semi-steel watches: A. The coating of all-steel watches is bright but dark, and the edges and corners of the case are smooth without a sharp feel. The copper case coating is bright with a hint of white, and the back of the lugs has sharp edges. Generally, the ring-shaped patterns formed by the cutting knife can be clearly seen on the back of the lugs. Moreover, the depth and size of the patterns vary, and they are arranged loosely and unevenly. The patterns on the all-steel case are fine and even, and are closely and neatly arranged. B. At the corners of the lugs (you can check on the inner side of the back of the lugs), gently scrape them with a small knife within a short distance. If the inside turns yellow, it indicates a copper case. C. Copper watch cases have relatively poor corrosion resistance. If not properly maintained, they are prone to fading (turning yellow or red), blistering or peeling of the coating after a period of use. The cute three-dimensional watch strap is very suitable for little girls to wear and will be a best-selling item on this year's Children's Day!