Tudor Hydronaut 20010 Automatic Watch Date 41mm ALL S.S. White Dial Wristwatch

Watch Overview

Offered here is a Tudor Hydronaut automatic wristwatch, reference 20010. This model is powered by the original Tudor automatic movement caliber ETA 2824-2, featuring 25 jewels, sweep seconds, and date calendar with quick-set function. This Swiss-made timepiece beats at a frequency of 28,800 vibrations per hour and provides an approximate power reserve of 38 hours.

The watch features a white dial with luminous baton hour markers, and luminous matching hands. A detailed black/red minute and seconds track surrounds the dial, while the date calendar is at 3 o’clock.

Housed in a 41mm stainless steel case with fixed textured bezel and the original signed screw-down crown. It comes fitted with a Tudor stainless steel bracelet.

Fully inspected and authenticated by our in-house watchmaker, this timepiece runs accurately and is ready to wear and enjoy.

Product Details

General Specifications

• Brand: Tudor
• Type: Wristwatch
• Model: Hydronaut
• Reference: 20010
• Year / Era: Modern
• Gender: Men
• Country of Manufacture: Switzerland

Dial & Display

• Display: Analog
• Color: White
• Features: Baton hour markers, sweep-seconds, minute/second track, date indicator

Movement

• Type: Self-winding
• Caliber: ETA 2824-2
• Jewels: 25
• Functions:
  • Sweep seconds
  • Date calendar with quick-set
  • Stop-seconds
• Power Reserve: 38 hours
• Frequency: 28,800 vph

Case & Band

• Material: Stainless steel
• Case Shape: Round
• Bezel: Fixed, textured
• Back: Screw-back
• Crown: Signed screw-down
• Crystal: Sapphire
• Band Type: Stainless steel bracelet
• Max Wrist Size: Approx. 7 1/4 in - 18.4 cm
• Case Back Markings: Montres Tudor S.A. Geneva Switzerland Stainless Steel 8180 - 20010 914463

Case Measurements (mm)

• Case Size: 41
• Case Diameter w/Crown: 44.8
• Case Lug to Lug: 47
• Case Thickness: 11
• Lug Width: 21
• Band Width: 21

Additional Info

• Box & Papers: NO
• Condition: The watch is in good pre-owned condition, showing light wear consistent with age and use.
• Notes: Fully inspected and authenticated by our in-house watchmaker, confirming that it runs accurately.

About Second Hand Horology

At SECOND HAND HOROLOGY, we offer a curated selection of watches ranging from vintage to modern, including both brand-new and pre-owned timepieces. We’re committed to quality, accuracy, and integrity. Our listings feature:

Professional, unedited photography and clear, transparent descriptions. Every watch is thoroughly inspected and securely packaged to ensure a confident, seamless buying experience.

We also warmly invite you to visit our physical shop and explore the collection in person.

Contact Us

We appreciate you checking out our listing! Don’t hesitate to reach out with questions, offers, or just to talk watches — we love what we do and enjoy connecting with fellow enthusiasts.

Thank you for your business—we truly appreciate your support and look forward to serving you again in the future!

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