






Santeiko Mod Santos style watch gray black arabic
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1 Year Warranty
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Inspired by the iconic Santos design, and featuring the prestigious Seiko TMI NH35 automatic movement, we present the Seiko Mod Santos. A 38mm high-end quality watch homage combining the perfect balance between excellence and accessibility.
*All watches are custom made with third party aftermarket and Non-OEM parts and OEM movements*
Santeiko Mod Santos style watch gray black arabic seiko mod automatic watch
- Movement : Seiko TMI NH35 automatic
- Case Diameter : 38mm (excluding crown)
- Case Material : 316L Stainless steel
- Case Thickness : 12mm
- Lug width : 20mm
- Case Back : Scratch Resistant glass
- Crown : Push in/pull out - Blue colour lab stone
- Dial : Aftermarket Gray black arabic
- Crystal : Scratch Resistant Sapphire mineral glass
- Bracelet material : 316L Stainless steel
- Clasp : Butterfly style
- Wrist size : Suitable for 14.5cm - 22cm+ (adjustable with extra links leave a note at checkout if needed)
- Lume : No
- Water Resistance : 3 ATM
- Comes with bracelet sizing tool
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Disclaimer
CIRCA WATCH LABORATORIES LLC-FZ is not affiliated with any brands shown, nor do we represent any of the various mentioned watch brands.
We use aftermarket pieces like NH movements handcrafted using different parts from Non-OEM or OEM suppliers from various marketplaces such as Ebay, Etsy, Amazon and Aliexpress, to make unique custom modified pieces. These parts are already manufactured by independent third party suppliers in which we only assemble the watches based on parts available on these marketplaces. We are not responsible for the manufacture of the parts. We only purchase the parts and assemble it.
Handcrafted with both genuine Seiko TMI movements and aftermarket dials and non original cases
Shipping
We offer FREE shipping with our freight forwarder from our warehouse in Hong Kong, who hand it to USPS priority, DHL-ecommerce, Royal Mail express, Deliver it, Last mile, 4PX & Cainiao smart logistics, UniUni or your national post office
Standard shipping - Free
- (7-12 working days at shortest)
- (12-18 working days at most)
Express shipping - $50 (Fedex or UPS)
- (1-3 working days at shortest)
- (3-5 working days at most)
You will then receive your tracking link once we ship your item! Due to the unique assembly from our warehouse, please allow a maximum of 1 week for modification. All times are estimates given from courier. After dispatch any delays are subject to your countries customs authorities which are beyond our control once the courier has the parcel. Patience is a virtue, and these timepieces are worth the wait!
Returns
If you have a change of mind and want to return your order we offer returns on all orders 14 business days from when you receive your watch. Please note that shipping costs for a return are to be paid by you unless the watch arrived damaged or was the wrong one. You can use a returns form via our live chat.
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CRAFTED FROM
316L stainless steel
Our watch cases and straps are sourced from reliable third-party suppliers which are made of 316L stainless steel, known for it's high quality and durability which also improves corrosion-resistance to ensure longevity for your timepiece.

iconic movement used
seiko tmi nh35a
The Seiko TMI NH35A movement by Seiko Instruments Inc. (TMI) launched in the early 2000s, is renowned for its reliability, affordability, and precision. With a 21,600 vph frequency, 41-hour power reserve, and hacking/hand-winding features, it has become one of the most widely used automatic movements in the industry for its performance and ease of servicing.

aftermarket BRACELET STYLE
leather or steel
The homage santos style straps are offered with a leather band or steel variant. Its durable, screw-down steel bracelet combined style and comfort, becoming an iconic design widely admired in the watch industry today.

aftermarket dial STYLE
roman numerals
The Roman numeral dial style, blending classic elegance with modern design. Its clean layout, with bold Roman numerals paired with a square style case, set it apart from others. This timeless design remains a hallmark of dials making it one of the most revered form of indices in the watch industry.
Need help?
Frequently Asked Questions
Regular servicing is recommended every 3-5 years to maintain it. Avoid exposure to water and extreme temperatures, and use the provided bracelet sizing tool for adjustments. For specific maintenance queries, contacting our support can provide further guidance.
Before purchasing, consider that these mod watches are custom-made with aftermarket parts, which means they are not affiliated with the official Seiko brand whatsoever. Each piece is uniquely assembled with movements by Seiko TMI and cases from aftermarket suppliers, so it's important to appreciate the artisanal nature of these custom mods in that they are made by purchasing parts from different websites, and assembled together like a jigsaw.
Unlike the original, which traditionally featured leather straps, our Seiko mod Santos style watches also feature a slightly different integrated stainless steel bracelet, providing a sleek, updated look that aligns with the current luxury sports watch trend.
It is a custom-modified timepiece that reflects a modern twist on the classic Santos design. Inspired by the luxury sports aesthetic of the 1970s, this watch combines the traditional elegance of a Santos style case with a Seiko TMI movement and a contemporary integrated bracelet.
Yes, each watch is shipped with a bracelet sizing tool to help adjust the fit to your wrist comfortably at home.
Each watch comes with our inhouse one-year warranty covering any defects in the movement, ensuring your peace of mind with every purchase.
Yes, the watches are tested for water-resistance up to 3 ATM.