Rolex Submariner 16610 Guideline
The Rolex Explorer II 216570 is powered by the brand’s in-house caliber 3187, which is found only in the reference 216570. The replica Rolex 3187 caliber evolved from the 3186 movements that powered its predecessor. 3187 is a certified Swiss chronometer that benefits from modern Rolex proprietary technologies such as the blue Parachrom hairspring and the Paraflex shock absorber for increased resistance to shocks and temperature fluctuations. Like many of Rolex’s other sports and tool replica watches, the Oyster bracelet is the only official option for the Explorer II Model 216570. With this in mind, the bracelet on the Model 216570 is a vast improvement over the Oyster bracelet fitted to its predecessor. 
Since its official discontinuation in 2021, the Rolex Explorer II Model 216750 is no longer in production and is completely unavailable at the retail level. This means that the pre-owned market is now the only place to find it for sale. With that in mind, given that the Rolex Explorer II 216750 has been in production for a full decade, the black and white “polar” dial versions are still readily available on the secondary market.
The price of a Rolex Explorer II ref. 216570 watch will vary depending on its age, dial color, overall condition, and whether the fake watch still has its original box and paperwork. As of June 2021, the reference 216750 watch can be priced between $10,000 and $14,000, which is significantly higher than the original retail price of the reference 216570, but still on the low side relative to the current price of a modern stainless steel replica Rolex sports watch.
It is also worth noting that while the Explorer II 216750 has the same retail price for both the black and white dials, the open market price for the “Polaris” model is significantly higher and some collectors are willing to pay several thousand dollars more for an identical watch with a white “Polaris” dial. Furthermore, this trend is not limited to the 216570 models, as almost all “Polaris” Explorer II watches, regardless of model, are worth more than their classic black dial counterparts.