Rolex · Submariner Date and GMT-Master II
Rolex 126610LN vs Rolex 126710GRNR
10 published specifications differ between these two, and 5 are identical. Every figure below is what the manufacturer states for that reference; nothing is inferred from the other watch.
What differs
| Specification | ||
|---|---|---|
| Case | Oyster, 41 mm, Oystersteel. Monobloc middle case, screw-down case back and winding crown | Oyster, 40 mm, Oystersteel. Monobloc middle case, screw-down case back and winding crown |
| Diameter | 41 mm | 40 mm |
| Water resistance | Waterproof to 300 metres / 1,000 feet | Waterproof to 100 metres / 330 feet |
| Crystal | Scratch-resistant sapphire, Cyclops lens over the date | Scratch-resistant sapphire |
| Bezel | Unidirectional rotatable 60-minute graduated, scratch-resistant Cerachrom insert in black ceramic, numerals and graduations coated in platinum | Bidirectional rotatable 24-hour graduated bezel, two-colour grey and black Cerachrom insert in ceramic, moulded numerals and graduations |
| Bracelet | Oyster, three-piece solid links, Oystersteel | Jubilee, five-piece links, Oystersteel |
| Clasp | Folding Oysterlock safety clasp with Rolex Glidelock extension system | Folding Oysterlock safety clasp with Easylink 5 mm comfort extension link |
| Calibre | Calibre 3235, Manufacture Rolex | Calibre 3285, Manufacture Rolex |
| Movement | Perpetual, mechanical, self-winding; bidirectional self-winding via Perpetual rotor | Perpetual, mechanical, self-winding, GMT function; bidirectional self-winding via Perpetual rotor |
| Movement notes | Precision −2/+2 sec/day after casing. Paramagnetic blue Parachrom hairspring with high-performance Paraflex shock absorbers. Instantaneous date with rapid setting and stop-seconds. | Precision −2/+2 sec/day after casing. Second time zone with independent rapid-setting of the hour hand, 24-hour display, instantaneous date, stop-seconds. |
What is identical
Worth knowing as much as the differences: these are the specifications you cannot use to tell the two apart.
- Dial
- Black, with highly legible Chromalight display with long-lasting blue luminescence
- Case back
- Screw-down
- Crown
- Screw-down, Triplock triple waterproofness system
- Power reserve
- Approximately 70 hours
- Certification
- Superlative Chronometer (official chronometer certification + Rolex certification after casing)
What the differences cost you
Each note below follows from the published figures in the tables above — what they mean for intake, for a listing, and for the handover. Nothing here estimates a price or a margin.
Do not describe these the same way
300 metres on the 126610LN against 100 on the 126710GRNR — not a variation on the same watch but a different class of one, built around a case and crystal designed for depth. Expect different buyers, different questions, and a different service conversation. Never carry the 126610LN's rating into the 126710GRNR's listing.
Different movements to verify and to service
The 126610LN runs the Calibre 3235, Manufacture Rolex and the 126710GRNR the Calibre 3285, Manufacture Rolex. Two consequences at intake: the service history that is normal for one calibre is not evidence about the other, and the calibre is the check that catches a movement swapped into the wrong case. Confirm the movement matches the reference rather than assuming it from the dial.
What to check on each
126610LN
- Check the platinum coating in the bezel numerals under magnification. Rolex coats the graduations in platinum, and wear or inconsistency there is a strong signal the insert is not original.
- Work the Glidelock extension through its full range of settings and confirm each position locks positively. It is a mechanism, it is used constantly, and a worn one is immediately obvious to a buyer.
- Verify the crown screws down cleanly onto the Triplock system. A crown that binds or will not seat is the single most consequential fault on a 300-metre case.
126710GRNR
- Set the local hour hand forward and back in one-hour jumps and confirm it moves alone. The 24-hour hand and the minutes must stay put — that independence is the whole complication.
- Check where the two bezel colours meet. A two-colour Cerachrom insert has a defined transition, and it should sit precisely on the graduation rather than drifting to one side.
- Look along the Jubilee bracelet for stretch. Five-piece links mean many more pins than an Oyster bracelet of the same length, and Jubilees show their age in the hand before they show it in photographs.
Sources
- Rolex official product page for reference 126610LN (Submariner Date; Oyster 41 mm; Oystersteel) - Model case: Oyster; 41 mm; Oystersteel; Oyster architecture: monobloc middle case; screw-down case back and winding crown; Diameter: 41 mm; Material: Oystersteel; Bezel: unidirectional rotatable 60-minute graduated; scratch-resistant Cerachrom insert in black ceramic with numerals and graduations coated in platinum; Winding crown: screw-down with Triplock triple waterproofness system; Crystal: scratch-resistant sapphire with Cyclops lens over the date; Water resistance: waterproof to 300 metres / 1000 feet; Movement: perpetual; mechanical; self-winding; Calibre: 3235; Manufacture Rolex; Precision: -2/+2 sec/day after casing; Functions: centre hour; minute and seconds hands; instantaneous date with rapid setting; stop-seconds for precise time setting; Oscillator: paramagnetic blue Parachrom hairspring with high-performance Paraflex shock absorbers; Winding: bidirectional self-winding via Perpetual rotor; Power reserve: approximately 70 hours; Bracelet: Oyster; three-piece solid links; Oystersteel; Clasp: folding Oysterlock safety clasp with Rolex Glidelock extension system; Dial: black with highly legible Chromalight display with long-lasting blue luminescence; Certification: Superlative Chronometer (official chronometer certification plus Rolex certification after casing) — retrieved 2026-09-22
- Rolex official product page for reference 126710GRNR (GMT-Master II; Oyster 40 mm; Oystersteel) - Model case: Oyster; 40 mm; Oystersteel; Oyster architecture: monobloc middle case; screw-down case back and winding crown; Diameter: 40 mm; Material: Oystersteel; Bezel: bidirectional rotatable 24-hour graduated bezel with two-colour grey and black Cerachrom insert in ceramic and moulded numerals and graduations; Winding crown: screw-down with Triplock triple waterproofness system; Crystal: scratch-resistant sapphire; Water resistance: waterproof to 100 metres / 330 feet; Movement: perpetual; mechanical; self-winding with GMT function; Calibre: 3285; Manufacture Rolex; Precision: -2/+2 sec/day after casing; Functions: centre hour; minute and seconds hands; 24-hour display; second time zone with independent rapid-setting of the hour hand; instantaneous date; stop-seconds for precise time setting; Oscillator: paramagnetic blue Parachrom hairspring with high-performance Paraflex shock absorbers; Winding: bidirectional self-winding via Perpetual rotor; Power reserve: approximately 70 hours; Bracelet: Jubilee; five-piece links; Oystersteel; Clasp: folding Oysterlock safety clasp with Easylink 5 mm comfort extension link; Dial: black with highly legible Chromalight display with long-lasting blue luminescence; Certification: Superlative Chronometer — retrieved 2026-09-22
Not affiliated with Rolex. Specifications are read from each manufacturer's own published documentation on the dates shown and may change; the manufacturer's current documentation governs.