The earliest movement used in the Rolex Explorer II was the Caliber 1575, but over the years it was replaced with more technically advanced movements to help this watch reach its full adventure potential. The first big upgrade was the Cal. 3085 which allowed the 24-hour hand to be adjusted independently from the 12-hour hand. This meant the Explorer II no longer just indicated day and night hours, but could also be used to track a second time zone – turning it into a GMT watch. Then came the Cal. 3185 which was improved upon more with a Glucydur balance wheel that is not only paramagnetic but was resilient in extreme temperatures. The 3186 came next with a blue Parachrom hairspring that is anti-magnetic and shock resistant for even better durability. Finally, we have the modern-day Cal. 3187 which features all the upgrades this watch has gained over the years – from the GMT functionality to the blue Parachrom hairspring. It’s also notable for its high-performance Paraflex shock absorbers, 31 jewels, -2/+2 seconds per day accuracy and 48-hour power reserve.The Submariner has a much longer history, so we’re going to start with the automatic Caliber 3135, which, while upgraded over the years, has been used in all date-displaying Submariner watches since 1988. While the aesthetics of the Submariner can vary, the Cal. 3135 has remained a trusted source of power for this beloved timepiece because of its sheer reliability. Today, the upgraded Cal. 3135 movement is COSC certified, outfitted with the anti-magnetic and ultra shock-resistant blue Parachrom hairspring, and boasts an impressive 48-hour power reserve just like the Explorer II.
Its case is made of 316 stainless steel also decorates with anti-reflective coating, it is not only generous in shape but also has a good performance to protect the watch. We can see this big dial is near full of all the places, it with simple style but it is easy in collocation and never out of fashion.The most important points we need to mention is that its capability is never affected even though it is simple in shape. When we see carefully, we find that it has another characteristic. Its second and minute hand separate in two place to display. In left, the place of nine o’clock, it is a small second dial. In right,the place of three o’clock is a dial of power reserve, we can see its energy situation clearly. Decorating with red color in this small dial, can let us feel that it is not so single in color matching. it has a good balance in two side. At the place of six o’clock, it is a display of date. This is really a creative design in color matching.
The replica is a real chronograph watch because its basic movement is a valjoux 7750 chronograph movement. The factory modified its movement plates and auto rotor to make it look closer to genuine IWC 79350 Caliber, and they did it. When you open the case back, you can not even tell the movement difference between the replica and genuine. So you can relax and do not worry to be spotted when wearing it among your friends.Black leather strap, plus black hand stitching, perfectly match the leisure style of the replica watch. The band is made of genuine alligator leather, it will be very durable. The leather band is fitted a deployant clasp, which is brushed and features “IWC” engraving. This IWC Portuguese is very necessary for men who need a watch to fit their business suits.
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