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SEIKO 75's 5ACTUS Cal.6106C

SEIKO 75's 5ACTUS Cal.6106C

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Introducing the Seiko " 5ACUTAS " made in 1975 .

The 5 Actus is a model that was created in 1970 as a series targeting young people, derived from the Seiko 5 .

Although it is an affordable watch, it is equipped with various functions such as automatic winding, waterproofness, and day-date, and also comes in many designs.

The 5 Actus was a watch that was popular among young people because it was a watch that was conscious of the new working adults and young people of the time, such as by using young people in advertisements in line with changes in people's lifestyles. .

 In addition, [ SS ] at the 6 o'clock position is an abbreviation for Second Setting ( second hand stop device ) .


The 5 Actus introduced this time has an impressive design with a combination of brown dial and gold indexes that gives it a profound feel.

The brown dial has been given a sunray treatment, and when it reflects the light it receives, the dial develops shades of color, creating a beautiful gradation.
The pencil needle has a recess in the center, into which a fine line is engraved.

In addition, the bar index has a matte surface and multifaceted cuts to ensure visibility without spoiling the atmosphere, and you can see that each part is carefully made.

It is a design that only Seiko can create, which is good at paying attention to the details from the user's perspective, and combines a solid design with high visibility without any discomfort.

The movement is equipped with 6106C , an automatic movement with 23 jewels.

Although it was a popular model at the time, it was packed with a variety of functions, including automatic winding, waterproofing, earthquake resistance, day-date, fast-forwarding, and a hack function that stopped the second hand.

There is no doubt that it is an extremely excellent movement for everyday use, and boasts stable performance in terms of accuracy.


Size: Height: 40mm , Width: 37.8mm , Thickness: 12.5mm , Weight: 88g .

Due to its slightly large size and calm impression, it is a design that is easy to incorporate into formal or business casual clothing such as suits and jackets.


In terms of condition, the case has only a few small scratches, and the edges are firm.
There are air bubbles on some parts of the glass windshield that occurred during production, but there is no problem with visibility.
The dial is in good condition with no signs of corrosion.
The movement has no rust and is in beautiful condition, just like new, and all functions, including the calendar, are working without any problems.


Product Details
Manufacture year Made in 1975
movement Cal.6106C / 23 jewels / automatic winding
case size Height: 40mm (including lugs) / Width: 37.8mm (including crown) / Thickness: 12.5mm / Lug width: 18mm / Weight: 88g (including belt) / Belt size: approx. 17.5cm
case material SS (stainless steel)
accessories Watch body/original case/our store warranty (1 year free warranty)
situation Antique (used)
Waterproof function non-waterproof
Note *This product will be overhauled after you place your order, so it will take approximately 1 to 2 months to ship.
Thank you for your understanding.

*The color may look slightly different on the screen and in real life. note that.

*This product is also sold in stores. Although we update the stock quantity from time to time, there may be times when the product you have purchased is out of stock. Please note that in the unlikely event that there is no scheduled arrival, we may cancel your order.

All watches handled by our store are internally inspected by a professional watch mechanic when they arrive, and are determined to be genuine before being sold, so you can use them with confidence.

When you purchase your watch, we will deliver it to you with a new leather strap.
Please select your desired color from the order selection tab and place your order.
*For products with genuine watch straps or metal bands, the leather strap will not be attached and will be sent separately as a spare.
We will also send you a special case for the watch when shipping.

●Be sure to check the information after purchasing an antique watch●

At RESUME, when selling antique watches, we do not hand them over immediately after receiving your order, but instead request an overhaul (hereinafter referred to as OH) from a professional craftsman, and then deliver the watch after the OH is completed. (Duration is approximately 1-2 months)

Our professional craftsmen, who are certified as watch repair technicians, will completely disassemble your watch, replace consumable parts such as internal gaskets, clean it, lubricate it, and maintain it to the point where it is within ±1 minute per day.

We will also send you our own overhaul certificate, as well as photos of the machine when it was disassembled and serviced, to show you what kind of work was done during the overhauling process at the time of delivery.

Of course, due to the nature of the product itself being a used item, there is no guarantee that it will never break, but we have taken this precaution so that you can enjoy the original performance of the watch and use it with confidence in the future. Thank you for your understanding.

When purchasing a product, we provide a one-year warranty period depending on the model. Even if the product is out of date, we will repair it for a fee. If you don't have a repair shop near you, please feel free to contact us.

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