Looking at the Lady Datejust 28 vs 31 and trying to work out which size belongs on your wrist? Both share the same movement, the same fluted white gold bezel, and the same case build, so the real decision comes down to 3mm of diameter and how that reads on you.
Short version: the 28 wears dressier and suits smaller wrists, while the 31 gives more presence and reads as the modern mid-size pick. This guide breaks down how the two differ in proportions, dial choices, versatility, and resale, so you can choose with confidence instead of guessing.
Rolex Lady-Datejust 28: What You’re Getting
Rolex introduced the Lady-Datejust 28 in 2015 at Baselworld, retiring the long-running 26mm case that had defined the women’s line for decades. Reference 279174 became the steel-and-white-gold anchor of the range, built around a 28mm Oystersteel case and an 18k white gold fluted bezel.
History runs deep here. Rolex launched the original Datejust in 1945 as the first self-winding chronometer wristwatch to show the date on the dial, then created the Lady-Datejust in 1957 as its first chronometer-certified watch made specifically for women.
Inside sits the Caliber 2236, a self-winding movement with Rolex’s Syloxi silicon hairspring for better resistance to shocks and magnetic fields. You get a 55-hour power reserve, 100m water resistance, and a choice of Oyster or Jubilee bracelet, both fitted with the Easylink 5mm comfort extension.
Key Specifications:
- Reference Number: 279174
- Case Size: 28mm
- Bezel: Fluted White Gold
- Bracelet: Oyster or Jubilee with Oysterclasp
- Movement: Caliber 2236
- Power Reserve: ~55 hours
- Water Resistance: 100 meters
- Certification: Superlative Chronometer (-2/+2 sec/day)
- Case Material: Stainless Steel with White Gold Bezel
- Dial Options: Sunburst, mother-of-pearl, Roman numerals
Lady Datejust 31: What’s Different
Rolex added the Lady-Datejust 31 to the modern lineup in 2018, slotting it between the 28mm Lady-Datejust and the 36mm Datejust. Reference 278274 follows the same White Rolesor recipe: a 31mm Oystersteel case with an 18k white gold fluted bezel.
Mechanically it matches the 28 exactly. Same Caliber 2236, same 55-hour reserve, same 100m water resistance, same Oyster or Jubilee bracelet. Collectors often call the 31 the “sweet spot” of the women’s range because it adds presence without crossing into the unisex 36mm territory.
Curious how it feels to size up further? Our Datejust 31 vs 36 breakdown covers that jump.
What the extra 3mm really buys is dial real estate. Reference 278274 turns up in bolder, more varied dials than the 28 usually wears, and that is where a lot of the size’s appeal comes from.
Key Specifications:
- Reference Number: 278274
- Case Size: 31mm
- Bezel: Fluted White Gold
- Bracelet: Oyster or Jubilee with Oysterclasp
- Movement: Caliber 2236
- Power Reserve: ~55 hours
- Water Resistance: 100 meters
- Certification: Superlative Chronometer (-2/+2 sec/day)
- Case Material: Stainless Steel with White Gold Bezel
- Dial Options: Sunburst, mint green, blue and purple Roman, diamond-set
Lady Datejust 28 vs 31: The Key Differences
Both watches come off the same blueprint, so the differences are about proportion and personality rather than performance. Here is where the 28 and 31 split.
1. Case Size and Wrist Presence
At 28mm with a lug-to-lug of roughly 32mm, the smaller Lady-Datejust sits flat and tidy on wrists in the 5 to 6 inch range. It reads delicate and dressy, closer to jewelry than to a tool watch.
Stepping up to 31mm adds noticeable coverage and a more contemporary stance. On wrists around 5.5 inches and up it looks balanced, though on very small wrists the lugs can begin to overhang.
Worth knowing: plenty of collectors who tried both say the 31 is the one they kept reaching for, even on petite wrists. Trying it on in person tells you more than the number does. For the bigger picture, here is how to choose a watch size for your wrist.
2. Dial and Bracelet Options
Reference 279174 leans classic. Expect sunray silver and grey, soft pink, white, and mother-of-pearl, usually with Roman numerals or simple baton markers.
Reference 278274 plays bolder. Alongside the classic finishes, the 31 shows up in mint green, vivid blue and purple Roman dials, and more elaborate diamond and meteorite layouts that the smaller dial simply can’t hold.
Bracelet choice is identical on both: the sporty three-link Oyster or the dressier five-link Jubilee, each on an Oysterclasp. Jubilee leans dressy, Oyster leans casual. If the band is your deciding factor, we break down Jubilee vs Oyster in detail separately.
3. Everyday Versatility
For daily wear, the 28 slips under a cuff and pairs cleanly with stacked bracelets or a thin bangle, which makes it the easy pick for someone who wears a watch alongside other jewelry.
A 31 carries better on its own. It holds attention across a desk, reads clearly at a glance, and moves from office to evening without looking either too small or too flashy. Either size works almost anywhere, so this comes down to whether you want the watch to whisper or speak up.
Related Models from Majestix
2026 NEW UNWORN Rolex Lady-Datejust Silver Dial Diamond Markers Yellow Gold Fluted Bezel Two Tone Jubilee 18K Yellow Gold Stainless Steel 28mm COMPLETE SET 279173-0003
Rolex Lady-Datejust Champagne Yellow Gold Dial Yellow Gold Fluted Bezel Yellow Gold President Bracelet Yellow Gold 28mm MINT CONDITION 69178
2026 NEW UNWORN Rolex Lady-Datejust Champagne Dial Diamond Markers Fluted Bezel Two-Tone 18K Yellow Gold Jubilee Bracelet Stainless Steel 28mm COMPLETE SET 279173
2025 Rolex Datejust 36 Blue Motif Dial Diamond Markers Diamond Bezel Jubilee Bracelet 18K White Gold Stainless Steel 36mm MINT CONDITION 126284RBR
2025 NEW UNWORN Rolex Lady-Datejust Silver Diamond Dial Diamond Bezel Jubilee Bracelet Two Tone Yellow Gold Stainless Steel 28mm COMPLETE SET 279383RBR
2019 Rolex Datejust 28 Pink Dial Diamond Markers Oyster Steel COMPLETE SET MINT CONDITION 279174
Price and Resale Demand
As of 2026, both references hold their value well on the secondary market. WatchCharts puts the steel-and-white-gold Lady-Datejust 28 (ref. 279174) around $9,700, with listings on Chrono24 averaging close to $10,000.
Reference 278274 trades higher, landing near $11,200 on WatchCharts. That gap tracks current taste: mid-size women’s watches have trended up, and the 31 has shown slightly stronger movement over the past year while the 28 stays steady.
Neither size is a speculative play, but both have proven resilient, which is reassuring if you ever want to trade up or move one on later. If value retention is part of your decision, here is how well Rolex holds its value across the lineup.
Side-by-Side Comparison
Want the whole comparison in one view? Here is how reference 279174 and reference 278274 line up spec for spec.
| Feature | Lady Datejust 28 (Ref. 279174) | Lady Datejust 31 (Ref. 278274) |
| Case Material | Stainless Steel with White Gold Bezel | Stainless Steel with White Gold Bezel |
| Case Size | 28mm | 31mm |
| Bezel | Fluted White Gold | Fluted White Gold |
| Bracelet | Oyster or Jubilee with Oysterclasp | Oyster or Jubilee with Oysterclasp |
| Movement | Caliber 2236 | Caliber 2236 |
| Power Reserve | ~55 hours | ~55 hours |
| Water Resistance | 100 meters | 100 meters |
| Certification | Superlative Chronometer | Superlative Chronometer |
| Dial Options | Classic palette, Roman or baton | Bolder colors, more elaborate designs |
| Best Wrist Range | ~5 to 6 inches | ~5.5 inches and up |
| Secondary Market (2026) | Around $9,700 | Around $11,200 |
| Personality | Delicate and dressy | Modern and present |
Which Lady Datejust Should You Buy?
Related Models from Majestix
2026 NEW UNWORN Rolex Datejust 31 Red Ombre Dial Diamond Markers Fluted Bezel President Bracelet 18K Yellow Gold COMPLETE SET 278278
Rolex Datejust 31 Pink Diamond Marker Dial Fluted Bezel Presidential 18K Rose Gold MINT CONDITION COMPLETE SET 278275
Rolex Datejust Black Dial Diamond Markers Fluted Bezel Two-Tone Jubilee Bracelet 18K Rose Gold Stainless Steel 36mm MINT CONDITION COMPLETE SET 126231-0019
2026 NEW UNWORN Rolex Datejust Chocolate Brown Dial Diamond Makers Fluted Bezel Jubilee Bracelet Two Tone 18K Rose Gold Stainless Steel 41mm COMPLETE SET 126331
2026 NEW UNWORN Rolex Oyster Perpetual Datejust 31 Silver Dial Stainless Steel COMPLETE SET 278240
Rolex Datejust 41 Silver Motif Dial Fluted Bezel Oyster Bracelet 18K Everose Gold Stainless Steel 41mm MINT CONDITION COMPLETE SET 126331
Both are excellent, so the right call is the one that matches your wrist and how you like to wear a watch. For everything beyond these two references, our Lady-Datejust buying guide lays out the wider lineup.
Choose the Lady-Datejust 28 if:
- You have a smaller wrist (roughly 5 to 6 inches) or want a flatter, dressier profile.
- You wear your watch with rings, bangles, or a tennis bracelet and want it to sit quietly in the mix.
- You prefer classic dials and a more traditional Rolex look.
Choose the Lady-Datejust 31 if:
- You want more presence and legibility, or your wrist runs 5.5 inches and up.
- You like bolder dial colors and more elaborate dial designs.
- You want the size with slightly stronger resale momentum right now.
Still torn between the two? Send us your wrist size and the dials you are drawn to, and we will pull the exact 279174 and 278274 pieces we have so you can weigh them side by side.
Where to Buy an Authentic Lady-Datejust Online
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A handful of legitimate channels make it easy to shop a pre-owned Lady-Datejust online. Chrono24 aggregates listings from dealers and private sellers worldwide, with buyer protection on escrow orders.
eBay covers many references through its Authenticity Guarantee program, which inspects qualifying watches before they reach you. Grailzee runs enthusiast-focused watch auctions if you prefer a bidding format.
We also buy, sell, and trade luxury watches, and the reason clients come to us instead of a big marketplace is the conversation before the purchase. Before you commit, we walk you through the actual watch: tour videos of the exact piece, honest condition notes, and a real person who has handled it answering your questions. You are not buying blind off a thumbnail.
That approach shows up in our 4.9-star Google rating, which comes from buyers who wanted to understand a watch fully before paying for it.
If you want that kind of walkthrough on a specific Lady-Datejust 28 or 31, reach out and we will line up the references we have that fit your wrist and your shortlist.
Final Thoughts on Lady Datejust 28 vs 31
Choosing between the Lady Datejust 28 and 31 comes down to 3mm and what you want from it. Reference 279174 is the dressier, jewelry-like 28 for smaller wrists and classic taste. Reference 278274 is the bolder, more present 31 that collectors keep calling the sweet spot. Both run the same Caliber 2236 and both hold value, so neither is a wrong answer.
Two quick tips before you commit. Try each over a shirt cuff, not just bare wrist, since that is where the size difference shows most. And if resale ever matters, the Jubilee configuration tends to be the easier one to sell on.
