How to choose the watch from observing its appearance ? The watch glass should be clear, smooth and free of bubbles. Moreover, the glass of watch should not have scratches and cracks. The case of watch should have an average color gloss and no surface scratches, defects, and rust. The back cover and case of the watch are of appropriate size. Its sealed ring should not be exposed. The hour, minute and second stitches should be straight. There is a suitable gap between the needle and the needle, between the needle and the dial surface, and between the needle and the glass. The dial surface should be kept clean. In addition, its color should be glossy average, and the marks and scales should be clear. The movement of the mechanical watch has no molecular compound plastic device, and the oscillating weight rotates smoothly. The more features the better the watch is? At present, watches have many functions, and their presets are relatively complicated. However, maybe the best watch does not express more functions. Some high-quality expensive watches are often the easiest to function. Watches with fewer functions are more prone to misdeminess and have a lower failure rate. Weighing whether a watch is good or not, you can't just look at its function, but consider its movement, material and preset style. How is the waterproof watch different? The waterproof functions of the watch are generally divided into 30 meters, 50 meters, 100 meters, etc. according to its grade. The waterproof rubber ring of the mirror back cover and the crown of the waterproof watch must meet certain waterproof standards to be regarded as a qualified waterproof watch. Different waterproof grade watches have different places of use. Is the diamond on the diamond watch a real diamond? The value of a diamond is usually determined by its quality, volume, and cutting process. High-value diamonds are also very expensive. Therefore, sometimes the diamonds on the watch are not necessarily real diamonds. In order to reduce costs, in the production of some watches, artificial diamonds are usually set on diamond watches.