The Explorer II has changed more than its familiar steel bezel might suggest. Reference 1655 began with a compact, unconventional dial and an orange 24 hour hand. The current 226570 uses a 42 mm case, a cleaner white or black dial and modern movement architecture. Treating every generation as the same watch hides the details that matter most in a replica comparison.
This history from PC Watch UK follows the main visual changes rather than repeating one set of specifications across five decades. Genuine Rolex facts establish the reference point. Replica construction and movement claims must then be considered separately.
Reference 1655 Established the Explorer II Identity
Rolex introduced the Explorer II in 1971. Reference 1655 paired a fixed 24 hour bezel with a large arrow shaped hand, allowing the wearer to distinguish daytime from night-time when natural light was unavailable. Its dial is now one of the most recognisable vintage Rolex layouts, but it is also easy to reproduce badly.
The narrow hour and minute hands, dense printed track and early orange hand need to remain visually separate. On replica interpretations, the bezel engraving, numeral shape and relationship between the 24 hour hand and dial are more revealing than artificial ageing. A darkened lume colour does not compensate for incorrect spacing.

Reference 16550 Introduced the Familiar White and Black Choice
The 16550 generation moved the Explorer II towards the layout recognised today. White and black dial versions made the collection easier to distinguish from the original 1655, while the independent hour hand gave the watch a more flexible second-time-zone function.
For a Rolex Explorer II 16550 replica comparison, dial colour is only the beginning. Date magnification, marker surrounds, bezel font and the shape of the red 24 hour hand should agree with the intended reference. A white dial also exposes differences in printing and hand contrast more readily than a dark dial.

Reference 16570 Refined the 40 mm Formula
Reference 16570 remained in the collection for many years and is often the generation people picture when they think of a 40 mm Explorer II. Its proportions are more restrained than the later 42 mm watches, and that difference should remain visible in the lugs, bezel width and bracelet transition.
Because the 16570 had a long production life, replica descriptions need to identify which dial and movement era they intend to represent. Combining features from different periods may create a plausible-looking watch that does not correspond to a coherent reference.

Reference 216570 Made the Explorer II Larger
The 216570 generation increased the case to 42 mm and brought back a prominent orange 24 hour hand. Larger hands and markers gave the dial greater visual weight, especially on the white Polar version. A replica based on this reference should not simply enlarge a 16570 dial without adjusting the proportions of the hands, markers and bezel.
Case thickness and lug form become especially important at this size. An overly heavy case can make the watch look deeper and shorter than the genuine reference. Bracelet width and end link fit need to support the larger outline.

Reference 226570 Is the Current Baseline
The current Explorer II reference 226570 retains the 42 mm Oystersteel case, fixed 24 hour bezel and white or black dial choice. Rolex lists calibre 3285, an approximate 70 hour power reserve, an Oyster bracelet with Oysterlock clasp and an Easylink comfort extension for the genuine watch. These details are documented on the official Explorer II reference page.
A replica may imitate the appearance while using a different movement and construction. The strongest Explorer II 226570 replica details are therefore the case outline, bezel engraving, orange hand shape, marker proportions, Cyclops position and bracelet integration. Official calibre performance should not be copied into replica specifications without evidence.

Compare One Generation at a Time
The most reliable method is to choose the exact reference first. Compare the 1655 as a vintage design, the 16550 and 16570 as distinct 40 mm generations, and the 216570 and 226570 as separate 42 mm watches. This prevents a seller’s generic Explorer II description from masking mixed details.
Our Rolex Explorer II replica watch section keeps these generations together while preserving their differences. For UK readers, Explorer II reference comparison is more useful than a single quality label because the correct case, dial and hand proportions depend on the generation being represented.