Explorer II

Ref. 216570 · “Polar (white dial)”

Case diameter: 42 mm; Measured in a published review
Lug-to-lug: 50 mm; Unverified
Thickness: 12.5 mm; Unverified
Lug width: 21 mm; Measured in a published review

Your wristIdeal fit

Wrist flat: 55.1 mmLug-to-lug: 50 mm

How the Explorer II wears

Its lugs add 8 mm to the 42 mm case, close to the 7.1 mm typical across the almanac, so its diameter is a fair guide to how it wears.

On our fit model it sits best on wrists from 7" to 8.25" (17.8–21.0 cm); below 7" the lugs start to reach the edge of the wrist.

At 12.5 mm thick it is thicker than 54% of the 24 other gmt watches we've measured, so expect it to sit tall on the wrist.

Its 21 mm lug width is one of the most common strap sizes; 28 other watches here share it, so aftermarket straps are easy to find.

Will the Explorer II fit your wrist?

With a 50 mm lug-to-lug, here is how it wears across common wrist sizes. We estimate the flat top of each wrist from its circumference; measure yours for a closer answer in the fit finder.

Wrist	Flat width (est.)	Fit
6"	47.2 mm	Lugs overhang
6.5"	51.2 mm	Snug, lugs near the edge
7"	55.1 mm	Ideal fit
7.5"	59.1 mm	Ideal fit
8"	63 mm	Ideal fit

Specifications

Reference: 216570
Collection: Explorer
Status: Discontinued (2021)
Introduced: 2011
Case material: Oystersteel
Crystal: sapphire
Water resistance: 100 m
Bezel: fixed, 24-hour graduated
Dial: white or black
Strap / bracelet: Oyster bracelet, three-piece solid links
Style: GMT, Field

Movement

Caliber: Rolex 3187
Type: automatic
Accuracy: COSC chronometer

Takes 21 mm straps. See other 21 mm watches and straps.

More Explorer references

Watches that wear the same size

Other watches within 1.5 mm of its lug-to-lug.

Same 21 mm lug width

All 21 mm watches

These take the same straps as the Explorer II.