Gruen Precision Chronograph 770R 1970's
Insured international delivery
Serviced by our watchmaker
12-Month Mechanical
Warranty
Returns accepted
within 14 days
This Gruen Precision chronograph dates back to the 1970s. Its beautifully patinated dial pairs applied indices with two sub-dials, along with telemeter and tachymeter scales, housed in a steel case.
It is powered by the manual-wind Valjoux 7730 caliber, derived from the famous Venus 188 caliber, a brand absorbed by Valjoux in 1966.
Watch Condition
The watch is entirely original. The dial is in good condition and has never been touched. The case is in good condition with some signs of wear.
Photo / video taken on a 17 cm wrist
Who is Gruen?
Gruen is an American watchmaker founded in 1894 in Ohio by German-born watchmaker Dietrich Gruen. It was among the great United States watch manufacturers, alongside Hamilton, Bulova, and Elgin, and reached its peak in sales in 1953. In 1958, the company, by then known as Gruen Industries, was sold off in pieces.
From the Venus 188 to the Valjoux 7730
When Valjoux absorbed Venus in 1966, it took over the Venus 188—a cam-actuated chronograph that was less expensive to manufacture than a column-wheel one—and relaunched it under the name 7730. It is a manual-winding movement with 17 jewels, beating at 18,000 vibrations per hour. The Valjoux 7750, one of the most widespread automatic chronographs, is a descendant of this movement.
What are the telemeter and tachymeter used for?
The tachymeter allows for the calculation of an average speed over a known distance. The telemeter estimates the distance to a phenomenon where the light is seen before the sound is heard, such as lightning or gunfire.
- Reference
- Year
- Serviced in
- Calibre
- Movement
- Case
- Diameter
- Lug width
What comes with your watch
Our signature case to protect and store your piece.
A brand-new leather strap, ready to wear.
A 12-month warranty certificate, which also attests to its authenticity.
Customs / Taxes
- For orders within the European Union, our prices include all taxes. No additional fees will be added upon delivery.
- For orders outside the European Union, customs duties or import taxes specific to your country of residence may be required upon receipt. Please check official websites for more information.
Delivery
We ship our watches worldwide via UPS, FedEx or DHL.
Standard delivery
- France: 2-3 business days
- Europe, UK, Switzerland: 2-5 business days
- North America: 4-10 business days
- Rest of the world: 4-10 business days
Express delivery
- France: 1-2 business days
- Europe, UK, Switzerland: 1-3 business days
- North America: 2-6 business days
- Rest of the world: 2-6 business days
The delivery times shown are estimates and may vary depending on your location, the shipping method chosen, carrier availability and customs clearance.
Waterproofing
Our vintage watches are not water-resistant.
Avoid contact with water, as well as exposure to dust, sand, or excessive moisture, to ensure the mechanism continues to function properly.
Any water or dust that gets inside the watch may damage it and is not covered by the warranty.
Returns
You have 14 days from the receipt of your order to make a return. To learn more, please consult our return policy.
Any other questions?
Check out our FAQ page
