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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 31MM Datejust 78240
Rolex 31MM Datejust 78240
Rolex 31MM Datejust 78240
Rolex 31MM Datejust 78240
Rolex 31MM Datejust 78240
Rolex 31MM Datejust 78240
Rolex 31MM Datejust 78240
Rolex 31MM Datejust 78240
Rolex 31MM Datejust 78240

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Rolex 31MM Datejust 78240

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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.
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Brand: Rolex
Item Number: 113947
Condition: (What's This?) Excellent
Model:
 Mid-size Datejust 78240
Serial/Year: F 2003-2005
Gender: Uni-Sex
Features: Automatic 2235 movement w/ date, scratch-resistant sapphire crystal, waterproof screw-down crown
Case: Stainless steel w/ smooth bezel (31mm)
Dial: Silver index w/ black chapter ring
Bracelet: Stainless steel Oyster w/ Fliplock clasp
Box & Papers Bob's presentation box and Certificate of Authenticity
Comments: This pre-owned mid-size Rolex comes w/ Bob's 3-day satisfaction guarantee and one year warranty

Mid-size Rolex Datejust Model 78240

The Mid-Size Datejust is perfectly on trend in the ever-changing world of watch style.  Measuring 31mm, the Oyster case is the perfect size for women who are looking for a slightly larger size watch that will look and feel flattering on the wrist.  As with all Datejust timepieces, this reference is expertly crafted to provide a lifetime of reliable readings.  The Oyster case is outfitted with a durable scratch-resistant sapphire crystal, resilient stainless steel, and a waterproof screw-down crown.  A matching three-piece link Oyster bracelet with flat links and a Fliplock clasp provides a secure fit.  Within the durable case lies a COSC certified perpetual movement with manual winding technology for a highly precise reading.  The Rolex Oyster Perpetual Datejust price varies, depending on materials used and condition.  The reference 78240 that is offered here today is in great condition and is an excellent introductory investment opportunity.

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Certified Authentic Report
Watch Assist Certified Pre-Owned Certificate Sample Report
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*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)

Product Reviews

Rolex 31MM Datejust 78240
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  • April 6, 2018
     

    Very easy process to buy the watch and it shipped the next day!

Testimonials

4.8
2897 verified reviews in the past 12 months
Google Customer Reviews
  • 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
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Trusted

Trusted

Proven to be trusted by thousands, with 5-star customer service rating.

Certified Pre-Owned

Certified Pre-Owned

All watches are meticulously inspected and authenticated by experts.

Best Price

Best Price

We're committed to offering the best prices through our low-price guarantee.

"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.

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