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Movement  |


Chronographs by Thomas Gref

Click on images for a larger picture

Thunderbolt - black dial


Catalina - silver dial


Back view

Side view


Both chronographs come in an exquisitely crafted stainless steel case with a satin brushed finish top and high-polished sides and back.  The case measures 42mm in diameter, 16 mm thick, with a lug-width of 20mm.  A domed sapphire crystal is used on top, with a sapphire display back to view the movement.  It features a robust 8.5mm screw-down crown and reinforced pushers.  It is water resistant to 20 ATM (200 meters).

The bracelet is beautifully constructed and finished, with a satin brushed finish on top and high-polished sides.  The endpieces are solid, and the removable links use screws (not pins).  Closure is by a high-quality double deployant clasp.

The Thunderbolt has a black and silver dial, with red accents.  The chronograph registers and the outer minute track have a silver ringed textured surface.  Superluminova is used on both the dial and hands. 

The Catalina features a silver and white dial, with an outer blue minute track which matches the blued steel hands.  Superluminova is used on the hour and minute hands.

The automatic movement is a Swiss-made ETA/Valjoux 7750, which features 25 jewels, 28,800 BPH (beats per hour), hacking, and a quickset day/date. This particular movement is one of the highest grades of the ETA/Valjoux 7750.  The movement has a durable rhodium finish and is highly decorated with perlage on the main plates and geneva stripes on the rotor with blued screws.  The power reserve is 42 hours

These watches carry a one-year warranty.  All Thomas Gref watches come with a 5 day money back guarantee.

Price: $2600  --- Out of Stock  ---


To place an order, please call 520-818-3382.  PayPal, Visa, and MasterCard accepted. 
Add $15 for shipping via Insured Priority US Mail.


Because many people are interested in how watches are designed and produced, I wrote the following article which describes how I created the Oceanic dive watch.  Follow the link below to read this article.

Article:  How to Design and Build a Custom Watch

Thomas Gref   -   AWI Certified Master Watchmaker   -   BS Mechanical Engineering

PO Box 69151   -   Tucson, AZ  85737   -   USA   -   ph 520.818.3382