Mechanical watches have this feature, which is its source of power, without this can not be achieved, and its length is also crucial. Of course, if it is a self-winding watch , insist on wearing every day can maintain a state of sufficient power, but if it is a hand-winding watch, then the power to do long on the very necessary. IWC Portugal series IW500107 (7-day power reserve automatic mechanical models) In general, the watch movement using ETA movement is about 40 hours or so, which is the most common motivation for the public watches on the market, a little longer is 42 hours, short words is 38 hours. If the watch power to even more than 3 days is a long driving force, in general, like the people of the watch brand will not have such a long drive. But last year Tissot launched a watch with 80 hours of power, be regarded as a long dynamic into the area. And this year Mido and Hamilton have launched a watch with 80 hours power reserve, we can imagine, many watch brands Swatch will likely use this long dynamic movement in the future, which also saw a long power watches good prospects . There are more than 3 days on the market dynamic watch, belonging to a longer period of power reserve, such as the famous An example is the example of the Portuguese state 7, which has a seven-day power reserve; of course Panerai also, but although it has a 10-day power reserve movement, but 8 days more famous; and Holley also introduced a 10-day-long memorial this year. If not for a longer dynamic watches, these can actually be called extra-long driving force. Come to talk about the legendary long dynamic watch, long power belongs to the seemingly simple but particularly complex functions, many watchmakers want to create a long dynamic movement, can give more help, but limited to Clockwork space, material, torque and other effects, long power is not easy to achieve. Long dynamic watches are not many, of which Vacheron Constantin has a hand-wound movement that provides a 14-day power reserve The famous Lange 31 of Lange was once the watch with the longest power until the appearance of the Yu-ship MP-05. The wrist-wrestling monster of MP-05 is worthy of the name of its handed down and has a 50-day power reserve It seizes the throne of the world's first long power, to know that it is unrealistic to want to give this watch a simple hand on the chain, it has a special on the chain of tools. If a watch motivation long enough, whether it is hand chain or automatic winding will give people in their daily life to save a lot of time, and not easy to stop. Although this feature does not seem to make a difference, but it is the most basic and practical function of the real one, is the so-called child birth Sun Zhongmou, buy a watch to buy long power ah! Poly fashion watch mall Recommended reading: Quartz watch is good or mechanical watch good ladies watch brand list the world's top ten watch brand watch list