Vintage Watch | Seiko 5 Actus 6106 - 7640
Vintage Watch | Seiko 5 Actus 6106 - 7640
Vintage Watch | Seiko 5 Actus 6106 - 7640
Vintage Watch | Seiko 5 Actus 6106 - 7640
Vintage Watch | Seiko 5 Actus 6106 - 7640
Vintage Watch | Seiko 5 Actus 6106 - 7640
Vintage Watch | Seiko 5 Actus 6106 - 7640
Vintage Watch | Seiko 5 Actus 6106 - 7640

Vintage Watch | Seiko 5 Actus 6106 - 7640

Regular price $409.00 USD Sale price $399.00 USD Save $10.00 USD


The Seiko 5Actus SS, the ancestor of the modern-day Seiko 5 series. 

Many may not know where the 5Actus comes from, the 5 from 5Actus is actually Seiko's 5 principal attributes of design
1. Diaflex (unbreakable mainspring),
2. Diashock (Seiko's shock-resistant design, equivalent to the Swiss "Incabloc"),
3. Automatic winding,
4. day/date indication, and
5. Water-resistant.

All Seiko 5Actus watch are fitted with automatic movement, Seiko is so proud of its automatic movement they even hide the crown of the vintage 5Actus series in part of the case as users of these movements will not need to wind the watch up while wearing it daily. 

An applied "SS" logo is also found on some of the Seiko 5Actus models which mean the short form of Second Setting. Examples with the SS logo are housing movement with hacking function. 

This particular Seiko 5 Actus SS example 6106 7640 manufactured in 1971 was fitted with a polished case with the crown of the watch perfectly blends into part of the watch case. The watch comes with a sun burst royal blue dial in absolutely perfect condition. Besides, the date changing mechanism of the movement is rather special. By pressing the crown into the watch, the date will click and change automatically. Because of its complex mechanical setup and users' misunderstanding, a large number of the vintage Seiko 5 movement's date-changing functions are broken in years of operating. We are proud to offer an example that works perfectly fine. 

In a watch with this age, it is an Epic piece. 


Maker: Seiko

Model: Seiko 5 Actus 6106 - 7640

Era: 1971 Dec

Case Diameter: 39 mm

Lug width: 18 mm

Case Condition: Absolutely mint mirror-finished case  same as when it leaves the factory 

Dial Condition: Perfect royal blue sunburst dial with patina developed on the hour marker in a milky colour  

Crystal: Perfect condition, no usage mark found on the crystal

Movement: 6106 automatic movement beating at at 21,600bph just serviced in Japan

Bracelet: The watch comes with its original steel bracelet, but we recommend to pair it with an 18mm leather straps. 

And of course, it comes with a Kyoto series leather strap in our store. Also you can pair it up with any straps we have in store by adding just a few extra to make the watch suit your personal taste.  Just let us know which one you like to pair the beauty up with.

Do you ship into my country?
  • Of course! We ship worldwide.

How much is the shipping cost?

  • Free of charge!

What is the shipping method?

  • For Hong Kong customers, we will ship the product by Hong Kong Post Local Mail, or self-pick at SF Express
  • For overseas customers, we will ship the product by Registered Air Mail with tracking number by Hong Kong Post

What kind of payment do we accept?

  • We accept Paypal, Visa, Master Card, American Express, Apply Pay, Alipay, WeChat Pay, Google Pay

Can I pay my invoice in other currency, besides HKD and USD? 

  • Sure, you can. We receive up to 24 foreign currencies through PayPal or Credit Card, such as: Canadian Dollar, Euro, British Pound, U.S. Dollar, Japanese Yen, Australian Dollar, New Zealand Dollar, Swiss Franc, Hong Kong Dollar, Singapore Dollar, Swedish Krona, Danish Krone, Polish Zloty, Norwegian Krone, Czech Koruna, Israeli New Shekel, Mexican Peso, Brazilian Real, Indonesia Rupiah, Malaysian Ringgit, Philippine Peso, New Taiwan Dollar, Thai Baht, Turkish Lira, and Russian Rubble.

International Tracking

We ship our orders using Hong Kong Post. This means that when Hong Kong Post collect the shipments from us here in the HK, they are then taken down to Hong Kong Air Mail Center to be sorted and passed on to the destination country's postal service. When tracking your order, you are able to do it through the Hong Kong Post website or your domestic Postal services website. The links to which can be found below but if your country is not listed then this means that your country does not accommodate the 'Tracked & Signed' service. Your country will accept Hong Kong Post's 'International Signed' service which is not trackable until the package has been signed for.

Tracking your order on the Hong Kong website, please follow this link - Hong Kong Post