LONGINES 70's ULTRA-CHRON / Cal.431

Introducing the Longines "Ultrachron" from the 1970s .

Longines was founded in Switzerland in 1867 .
Since its founding, Longines has been renowned for its technology and precision, and in 1879 it successfully developed the world's first chronograph movement, laying the foundation for sports watches.
It will have a huge impact on the world of sports.

Longines also has a great influence in the world of adventure.
In the 19th century, people began to venture into unexplored mountains and seas.

On adventures where having perfect equipment can mean the difference between life and death, many adventurers of the time chose Longines watches to help them keep track of time, the most important thing.

In 1904 , Captain J. E. Burney used a Longines chronometer during his 429- day North Pole expedition.

In addition, a Longines aviation chronometer was used as an excellent navigation device in the cockpit of Charles Lindbergh when he successfully crossed the Atlantic Ocean non-stop in 1927 .

Longines has a strong connection with sports and adventure.
This manufacturer continues to make great strides as a pioneer of Swiss watches.

 

The Longines Ultrachron was released in 1968 .

The Ultrachron was announced and released to the world as a watch boasting greater precision than a chronometer, and demonstrated accuracy comparable to that of the electronic watches of the time.
This model attracted attention from around the world as a watch with extremely high precision among watches of its time.

The dial is a dark brown with a unique glossy finish.
It's a rare color to be used on a dial, and it gives off a casual, modern feel that's reminiscent of the 1970s .

In addition, a center cross line is placed in the center, making the entire dial look clearer and creating a tightened look.
At the same time, it ensures high visibility.

The hands and indexes are pencil hands, and the upright indexes are cut into a mountain shape, a unique detail that, like the dial, is not often seen in the 1960s .

A highly practical date function is installed at the 3 o'clock position.

The Ultrachron was created with meticulous calculations of both design and practicality, from the case size to the placement of the indexes.
This is a watch that I would recommend to anyone looking for a unique watch.

 

The movement is equipped with 17 jewels, automatic winding Cal.431 .

At the time of its release, Longines advertisements described it as "the world's most accurate watch," showing the company's high confidence in its accuracy.

In fact, its accuracy is guaranteed by the fact that it set a record with the same accuracy as a movement entered in an astronomy competition.

In addition to its accuracy, this is an excellent movement that was developed with practicality in mind, including a calendar function.

 

Size: height: 42mm , width: 38.6mm , thickness: 10.3mm , weight: 43g .

The size is just right for a 17cm wrist.

Thanks to the brown dial, at first glance it looks like a casual watch, but it also goes well with business styles such as suits and jackets.

Of course, it also goes well with casual outfits such as denim shirts and shirt styles, making it a piece that can be used in a wide range of situations.

 

The condition is good with only minor scratches on the case and no noticeable damage.
The dial remains in beautiful condition with no corrosion or wear.
The movement is in good working order and the calendar function works smoothly.

Product Details
Year of manufacture	1970s
Movement	Cal.431 / 17 jewels / Automatic
Case Size	Length 42 mm (including lugs) / Width 38.6 mm (including crown) / Thickness 10.3 mm / Lug width 18 mm / Weight 43 g (including belt)
Case material	SS (Stainless Steel)
accessories	Watch body/Original case/Our store warranty (1 year free warranty)
situation	Antique (Used)
Waterproof function	Not waterproof
Note	*This product will be overhauled after your order is placed, so shipping will take approximately 1 to 2 months . Please be aware of this. *Please note that the color of the actual product may differ slightly from what you see on your screen. *This product is also sold in stores. We update our inventory regularly, but the product you purchased may be out of stock. Please note that if there is no scheduled restock, your order may be cancelled.

All watches sold in our store are internally inspected by a professional watch mechanic upon arrival and are only sold after being determined to be genuine, so you can use them with confidence.

When you purchase a watch, we will attach a new leather strap to it when you deliver it to you.
Please select the color you want from the order selection tab and place your order.
*For products that come with original watch straps or metal bands, the leather strap will not be attached and will be sent separately as a spare.
A special case for the watch will also be included with the shipment.

Please be sure to read the following information after purchasing an antique watch.

When selling antique watches at RESUME, we do not immediately hand over the watch to you upon receiving your order. Instead, we ask a professional craftsman to overhaul it (hereinafter referred to as OH) and deliver it to you after the OH is completed. (This takes about 1 to 2 months.)

A professional craftsman with first-class watch repair technician qualifications will completely disassemble your watch, replace worn parts such as the internal gaskets, clean it, oil it, and perform a thorough overhaul, maintaining it to a daily accuracy of about ±1 minute.
When we deliver the machine, we will also send you our own overhaul certificate, which shows what kind of overhaul was performed, as well as photos of the machine being disassembled and maintained.

Of course, due to the nature of the product itself being a second-hand item, there is no guarantee that it will never break, but we ask for your understanding that we take this approach so that you can enjoy the original performance of the watch and use it with peace of mind in the future.

When you purchase a product, we offer a one-year warranty depending on the model. Even if the warranty period has expired, we will properly repair the product, but there will be a fee. If there is no repair shop near you, please feel free to contact us.