31mm Rolex Watches

Buying Advice

About 31mm Rolex Watches

The 31mm Rolex sits between the 28mm Lady-Datejust and the 36mm Datejust, making it the most popular midsize Rolex for women and a strong unisex option for buyers who want more wrist presence than a traditional ladies' size without stepping up to a full 36mm. At WatchGuys, we stock pre-owned and unworn 31mm Rolex watches across every generation and material tier, each authenticated in-house and backed by our 2-year warranty.

Which Rolex Models Come in 31mm?

Two current-production models are available in 31mm. The Rolex Datejust 31 (reference 278XXX series) is the primary 31mm model, available in Oystersteel (ref. 278240), white gold Rolesor (ref. 278274), yellow gold Rolesor (ref. 278273), Everose gold Rolesor (ref. 278271), and solid 18k gold, with smooth, fluted, or diamond-set bezels and Oyster, Jubilee, or President bracelets. Precious metal Datejust 31 models with matching President bracelets are often referred to as the ladies' Rolex President. The Rolex Oyster Perpetual 31 (ref. 277200) is a time-only alternative with a clean dial and domed bezel, available in Oystersteel at a lower price point. Pre-owned inventory also includes discontinued five-digit references (178XXX, 78XXX, 68XXX series) at lower prices. For a full reference breakdown, see our Rolex Datejust Buyer's Guide.

31mm Rolex Price

Pre-owned 31mm Rolex prices depend on model, material, bezel, and condition. As of 2026, the Oyster Perpetual 31 (ref. 277200) starts around $6,000 to $7,000. Current-generation Datejust 31 models in Oystersteel (ref. 278240) range from $8,000 to $11,000. Two-tone Rolesor models (refs. 278273, 278274) typically fall between $10,000 and $15,000. Solid gold and diamond-set configurations can exceed $25,000. Discontinued five-digit midsize references start as low as $4,000 for older steel models, making them one of the most accessible entry points in the women's Rolex collection.

31mm vs 36mm Rolex

The 31mm and 36mm are the two most popular Rolex sizes for women who want a versatile daily watch. The 31mm offers a traditionally proportioned fit on wrists measuring 5.5 to 6.5 inches. The 36mm Rolex provides a bolder, more contemporary look and is also the classic men's Datejust size, making it a true unisex option. Both share the same material, bezel, and bracelet options in the Datejust family. The 31mm is only available in the Datejust and Oyster Perpetual, while the 36mm also appears in the Day-Date and Explorer.

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Why Buy 31mm Rolex Watches From WatchGuys

WatchGuys is a trusted source for pre-owned 31mm Rolex watches for sale, with every piece authenticated in-house, priced competitively, and shipped overnight.

Common Questions

31mm Rolex FAQ

• What Rolex models come in 31mm?

  Two current Rolex models are available in 31mm: the Datejust 31 (reference 278XXX series) and the Oyster Perpetual 31 (reference 277200). The Datejust 31 is the primary model, offered in Oystersteel, two-tone Rolesor, and solid 18k gold with Oyster, Jubilee, or President bracelets. Discontinued midsize references (178XXX, 78XXX, 68XXX series) are also available on the pre-owned market.

• How much does a 31mm Rolex cost?

  Pre-owned 31mm Rolex prices in 2026 start around $4,000 for discontinued five-digit midsize references in steel. Current-generation Oystersteel Datejust 31 models (ref. 278240) range from $8,000 to $11,000. Two-tone Rolesor models fall between $10,000 and $15,000. The Oyster Perpetual 31 (ref. 277200) starts around $6,000 to $7,000. Solid gold and diamond-set configurations can exceed $25,000.

• Is 31mm a good size for a woman?

  The 31mm Rolex is one of the most popular women's sizes. It offers more wrist presence than the 28mm Lady-Datejust while keeping a refined, traditionally proportioned fit. It works well on wrists measuring approximately 5.5 to 6.5 inches. Many women also wear the 36mm Datejust for a bolder, more contemporary look.

• 31mm vs 36mm Rolex, what is the difference?

  The 31mm Datejust is the midsize option, designed primarily for women or anyone who prefers a smaller watch. The 36mm Datejust is the original men's size that has become a popular unisex choice. Both share the same bezel, bracelet, and material options. The 36mm is also available in the Day-Date and Explorer, while the 31mm is limited to the Datejust and Oyster Perpetual.

• What movement is in the 31mm Rolex Datejust?

  Current-generation 31mm Rolex Datejust watches (reference 278XXX series) use the Caliber 2236, an automatic movement with Rolex's Syloxi silicon hairspring, 55 hours of power reserve, and Superlative Chronometer certification. The Oyster Perpetual 31 uses the Caliber 2232 with similar specifications. Discontinued midsize references used earlier calibers including the 2235 and 2235.

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