In recent years, the height of new watches has been expanding. Most mainstream men's timepieces, especially sports watches, have expanded to more than 40mm, and even 44mm and 45mm are common. Both manufacturers and consumers seem to prefer large diameter wrist watches. On the contrary, watches below 38mm are flat in the market. Even if it is the same style of watch, people tend to give priority to the big diameter version when they buy it. How much influence does the diameter possess on the purchase of watch? The complex function of calendar is one of the three traditional complex functions in neuro-scientific tabulation. This complex mechanism was invented by Thomas Mudge, the British Master of tabulation, at the end of the 18th century. It can automatically identify the best and small months and the leap year. Until now, the actual function of perpetual work schedule occupies an important position within the education tabulation with its practicability as well as special aesthetic design. This year, Carl F. Bucherer Adamavi 28mm classical watches launched a new heritage series, self-made calendar view limited edition, with brown series in order to interpret the new aesthetic style. After several years of research and development, Montblanc's homemade calendar with complex functions was launched two years ago. This season, the watch added a brownish one. Montblanc's perpetual appointments is quite special, which is different from most push rod perpetual calendar devices. It is only composed of several gears and cams, and its two-way crown adjustment function can't be realized by using push rod. Patek Philippe ref. 2523/1 rose gold wristwatch was purchased at fuyisi "famous watch collection - Geneva XII" auction with a drop hammer associated with 4991000 Swiss francs, setting the highest annual auction price. The watch is one of the only four known rose gold wrist watches in ref. 2523/1 world time, and one of the just two to appear on the public sale market. The watch is made of 18k rose gold and also polished. From the side, you find its silk. The warm metallic original appeal adds to the luxury of the enjoy.