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  • 100% Certified Authentic

    Bob's Watches
    100% Certified Authentic

    At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.

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100% Certified Authentic

Bob's Watches
100% Certified Authentic

At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.

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Rolex Datejust 31MM 178240

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Rolex Datejust 31MM 178240

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    100% CERTIFIED AUTHENTIC

    Bob's Watches
    100% Certified Authentic

    At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.

    Guaranteed Authentic
    Certified Authentic WatchesCertified 100% Authentic
    Bob's Watches Genuine Authenticity Pledge
    At Bob's Watches, your trust is very important to us. We believe that buying a pre-owned Rolex watch online should be simple, honest, and straightforward. To that end, we guarantee that every Rolex watch on our site is 100% authentic, comprised entirely of Rolex parts. Our mission is to be the leading trusted online source for selling and buying authentic pre-owned Rolex watches. We stand behind this authenticity guarantee with a full money back refund on any watch not found to be completely genuine.
Looking to sell? Sell Your Rolex

Brand: Rolex
Item Number: 133901 x
Condition: (What's This?) Excellent
Model Name / Number: Datejust 178240
Serial/Year: Random - 2011
Gender: Mid-size (31mm)
Movement: Automatic 2235
Case: Stainless steel w/ Smooth bezel, inner reflector ring engraved with serial number, scratch resistant sapphire crystal
Dial: Silver w/ Superluminova display, black chapter ring
Bracelet: Stainless steel Oyster w/ Oysterclasp
Box & Papers: Rolex box, booklets, hang tags, polishing cloth, and Rolex warranty card dated 3/2011
Warranty: This pre-owned Rolex comes with Bob's Watches one year warranty
Return Policy: If not 100% satisfied, return watch in 3 days for a full refund. Terms.

PRE-OWNED WATCH CONDITION EXAMINATION

This Rolex watch is in overall excellent condition.

Mid-Size Rolex Datejust 178240

By Paul Altieri

With the increasing popularity among women to wear larger timepieces, the mid-size Datejust reference 178240 is perfectly on trend.  Slightly larger than traditional women's Rolex dress watches, the mid-size Datejust provides a bold yet feminine fit.  The case and accompanying Oyster bracelet feature a high-polish and brushed finish, creating a sleek style for all occasions.  Reinforced with a scratch-resistant sapphire crystal, 904L stainless steel, and Twinlock screw-down crown, the case protects the calibre 2235 perpetual movement within for a lifetime of accurate timekeeping.  Beneath the crystal lies a silver dial with highly visible luminous baton hour markers, central sweeping hands, a Rolex coronet at the 12 o'clock marker, and an automatically changing date display at the 3 o'clock marker.

At Bob's we authenticate, purchase and service all of our watches thereby ensuring the integrity of every Rolex we sell. All service is performed by an authorized Rolex service provider with only genuine Rolex parts.   Any watch listed on our website is in store and ready for free overnight shipping.  Bob's Watches; 100% genuine Rolex!

Certified Authentic Watch Assist Certified Pre-Owned Certificate Sample ReportClick To Expand
Certified Authentic Report
Watch Assist Certified Pre-Owned Certificate Sample Report

*All Pre-Owned Rolex watches are guaranteed to be 100% genuine and certified authentic. All watches are shipped to fit the average size wrist (7 1/4" - 7 1/2" for men and 6 1/4" - 6 1/2" for women). Additional links can be purchased if needed.

HAVE A QUESTION? 800.494.3708  |  MON - FRI 9AM - 5PM (PST)
Rolex Datejust 31MM 178240
5 2 reviews
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  • November 1, 2019
    Beauty

    The watch is beautiful and looked brand new! It was also very affordable.

  • April 15, 2019
    My impression

    Very nice, well designed, quality watch. Was returned because of my wife’s preference for a black dial!

4.8
2897 verified reviews in the past 12 months
  • 5/5

    Regarding BOB’s WATCHES / *** When purchasing an item that is as expensive as a high quality pre owned ROLEX, you’d only hope for a great experience and great service....  when dealing with BOB’s WATCHES and specifically with *** in the Service/Sales Department, you will receive not only a GREAT EXPERIENCE and GREAT SERVICE, but a truly professional and yet personal connection in which you will treated with the high quality luxury sales & service you’d expect. After my 3rd ROLEX purchase from BOB’s WATCHES, I can truly say I am VERY thankful that I made all of my purchases with ***!!!!    Thank you, ***

    September 14, 2020
  • 5/5

    I have made several purchases and one sales through Bob’s. The order process, payment, processing, and most importantly delivery have all been absolutely flawless. Very quick and efficient. I never look anywhere else for used Rolex.

    November 30, 2019
  • 5/5

    Fantastic experience

    October 22, 2019
  • 5/5

    Watch was exactly as advertised and in excellent condition. Thank you for providing top notch services!

    September 29, 2019
  • 5/5

    Superb site and transaction, phenominal delivery time. Some slight confusion concerning the special discount at the time. I didn't receive it. No big deal I would not hesitate to purchase another rolex from Bob's ! ***

    September 28, 2019

"The most trusted place to buy or sell a used luxury timepiece" – WSJ

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Bob's Watches is an independent watch dealer and is not sponsored by, associated with and/or affiliated with Rolex, or any other brand listed. Bob's Watches only sells pre-owned watches and provides its own warranties on the watches it sells. Rolex Datejust, Rolex Day Date President, Submariner, Presidential, Explorer, Sea Dweller, Super President, GMT Master, GMT, YachtMaster, Prince, Milgauss, MasterPiece, Air King, Cosmograph Daytona, and PearlMaster, etc are all registered trademarks of the Rolex Corporation. All brands including Brequet, Cartier, Audemars Piguet, Patek Philippe, Ulysse Nardin, Breitling and Omega, etc are trademarks of their respective owners.