The new Longines Master Collection model features a diameter of 40mm and is the first to use the original Japanese Seiko NH35 movement. Its specific advantages are as follows:.1. The appearance details are closer to the original version. The three-piece case design ensures water resistance. Given the advantages of the movement, it can maintain the original synchronous dimensions: a diameter of 40mm and a thickness of 11.5mm, and it is equipped with an arched double anti-reflective sapphire crystal.2. It is equipped with the original imported Japanese Seiko NH35 movement, which improves upon the original L888.5 skeleton automatic rotor. The rotor color matches that of the new 40mm model, filled with rose gold. The rotor breaks the limitation of the Citizen 8215's unidirectional oscillation, allowing for bidirectional movement, which is more flexible and produces less noise during free oscillation, thus enhancing its power reserve function.3. The date window has been optimized to match the original size, and the date font is clear.4. The model number, case number, and warranty card number are unified in a three-in-one format.