Rolex · Datejust 41 and Land-Dweller 40
Rolex 126334 vs Rolex 127334
9 published specifications differ between these two, and 6 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 and white gold. White Rolesor — combination of Oystersteel and white gold | Oyster, 40 mm, Oystersteel and white gold. Monobloc middle case, screw-down case back and winding crown. White Rolesor — combination of Oystersteel and white gold |
| Diameter | 41 mm | 40 mm |
| Dial | Bright blue, with highly legible Chromalight display with long-lasting blue luminescence | Intense white, honeycomb motif, with highly legible Chromalight display with long-lasting blue luminescence |
| Case back | Screw-down | Transparent case back with anti-reflective coating; screw-down |
| Bracelet | Oyster, three-piece solid links, Oystersteel | Flat Jubilee, five-piece solid links, Oystersteel |
| Clasp | Folding Oysterclasp with Easylink 5 mm comfort extension link | Concealed folding Crownclasp |
| Calibre | Calibre 3235, Manufacture Rolex | Calibre 7135, Manufacture Rolex |
| Power reserve | Approximately 70 hours | Approximately 66 hours |
| Movement notes | Precision −2/+2 sec/day after casing. Instantaneous date with rapid setting and stop-seconds. | Precision −2/+2 sec/day after casing. Instantaneous date with rapid setting and stop-seconds. Syloxi hairspring in silicon with patented geometry, with Paraflex shock absorbers. |
What is identical
Worth knowing as much as the differences: these are the specifications you cannot use to tell the two apart.
- Water resistance
- Waterproof to 100 metres / 330 feet
- Crystal
- Scratch-resistant sapphire, Cyclops lens over the date
- Bezel
- Fluted
- Crown
- Screw-down, Twinlock double waterproofness system
- Movement
- Perpetual, mechanical, self-winding; bidirectional self-winding via Perpetual rotor
- 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.
Only one can be checked without opening it
The 127334 has a display back and the 126334 does not. You can read the 127334's movement — and photograph it for the listing — without breaking a seal. Verifying the 126334 to the same standard means opening it, which is a watchmaker's job and a water-resistance question afterwards.
Different movements to verify and to service
The 126334 runs the Calibre 3235, Manufacture Rolex and the 127334 the Calibre 7135, 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
126334
- Treat the fluted bezel as gold, because it is. White gold takes marks more readily than steel and the flute peaks are exactly where a careless polish rounds the profile.
- Check the flute edges are even all the way round. A bezel that has been polished shows flattened peaks on the side that sat against a desk, and the asymmetry is visible once you look for it.
- Note the clasp is an Oysterclasp rather than the Oysterlock used on the sports references — there is no safety catch, which is correct here and not a missing part.
127334
- Inspect the transparent case back closely, including its anti-reflective coating. It is unusual on an Oyster case, it faces the wrist, and marks on it are both visible and awkward to remedy.
- Check the honeycomb dial texture is even across the whole surface and under the markers. A textured dial shows handling damage and moisture marking far more readily than a flat one.
- Confirm the movement is the 7135 with a Syloxi hairspring rather than one of the Parachrom calibres. The 66-hour reserve belongs to this movement family, not the 70-hour ones.
Sources
- Rolex official product page for reference 126334 (Datejust 41; Oyster 41 mm; Oystersteel and white gold) - Model case: Oyster; 41 mm; Oystersteel and white gold; Oyster architecture: monobloc middle case; screw-down case back and winding crown; Diameter: 41 mm; Material: White Rolesor - combination of Oystersteel and white gold; Bezel: fluted; Winding crown: screw-down with Twinlock double waterproofness system; Crystal: scratch-resistant sapphire with Cyclops lens over the date; Water resistance: waterproof to 100 metres / 330 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; Oscillator: paramagnetic blue Parachrom hairspring with Paraflex shock absorbers; Winding: bidirectional self-winding via Perpetual rotor; Power reserve: approximately 70 hours; Bracelet: Oyster; three-piece solid links; Oystersteel; Clasp: folding Oysterclasp with Easylink 5 mm comfort extension link; Dial: bright blue with Chromalight display; Certification: Superlative Chronometer — retrieved 2026-09-22
- Rolex official product page for reference 127334 (Land-Dweller 40; Oyster 40 mm; Oystersteel and white gold) - Model case: Oyster; 40 mm; Oystersteel and white gold; Oyster architecture: monobloc middle case; screw-down case back and winding crown; Diameter: 40 mm; Material: White Rolesor - combination of Oystersteel and white gold; Bezel: fluted; Winding crown: screw-down with Twinlock double waterproofness system; Crystal: scratch-resistant sapphire with Cyclops lens over the date; Case back: transparent case back with anti-reflective coating; Water resistance: waterproof to 100 metres / 330 feet; Movement: perpetual; mechanical; self-winding; Calibre: 7135; 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: Syloxi hairspring in silicon with patented geometry and high-performance Paraflex shock absorbers; Winding: bidirectional self-winding via Perpetual rotor; Power reserve: approximately 66 hours; Bracelet: flat Jubilee; five-piece solid links; Oystersteel; Clasp: concealed folding Crownclasp; Dial: intense white with honeycomb motif and highly legible Chromalight display; 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.