Mechanical watches according to the watch movements can be divided into two parts roughly: based movement and complex movement, and for the basic movement part, Rolex does very well, which enjoys a saying "once and for all", because almost all the Rolex main focus are on how to enhance the precision of the wrist watch and constantly makes efforts on the "three anti" performance(waterproof, shockproof, anti magnetic), so the current watches that are accredited by Swiss observatory, almost half are all products from Rolexes, the other half is all the watches brands that have participated in the observatory certification, and this is not simple to achieve this success. In addition, the deepest diving watch record is kept by Rolex, it also can prove that the Rolex on "three anti" performance does "remarkably" indeed.
Rolex Deepsea Challenge watch once dived under the sea of 10,898 meters(The deepest Mariana trench, is also the deepest parts of the world). Rolex Yacht-Master II 116681 watch is featuring the between-gold material and it is carrying with the homemade 4160 automatic movement, with the Diamagnetic blue PARACHROM hairspring, with functions of timing/fly back, and watch size of 44 mm. Cartier ROTONDE DE CARTIER series W1556251 watch is featuring platinum gold material, with hollow-out design and perpetual calendar, tourbillon, minute repeater complicated function, and the watch size of 45mm.
Though Cartier didn't do well like rolex on basic movement, even we've got a lot of basic watches with quartz movements from Cartier, another important indicator that challenges the watchmaking technology of Cartier, is that the complex movement is accomplished, including the Top complex function configuration of the minute repeater, the tourbillon etc, Cartier has achieved in the related watches. So one word, although each has his strong point, if for outstanding contribution to the watchmaking workers arts, Rolex is winning.