SEESTERN S434 V2 39mm Automatic Diver with Sapphire
If you’re into everyday dive watches with clean looks and reliable internals, the SEESTERN S434-2 hits a solid balance. This 39mm diver uses a trusted Japan NH35A automatic movement, visible through a display caseback—a nice touch for those who enjoy watching the mechanics in motion.
The case is crafted from 316L stainless steel, topped with a domed sapphire crystal. The curvature of the glass adds a subtle vintage look while also offering solid scratch resistance. With a thickness of 13mm including the crystal, it has just enough wrist presence without looking bulky.
BGW9 Super Luminous coating lights up the hands, markers, and bezel for clear visibility in the dark — as seen in the night-shot image. It glows a sharp blue that’s easy to read without being too bright.
The 200m waterproof rating makes this model suitable for swimming, snorkeling, and even shallow diving. The 20mm strap lug width means it fits a wide range of aftermarket straps if you’re into customizing your watches. It ships with either a stainless steel bracelet (deployment clasp) or rubber straps depending on the variation.
Key features like micro-adjustable clasp, domed crystal, and 46mm lug-to-lug length make the S434-2 both wearable and versatile for many wrist sizes.
Key Specs Summary:
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Movement: Japan NH35A Automatic
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Case Material: 316L Stainless Steel
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Crystal: Domed Sapphire
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Diameter: 39mm
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Thickness: 13mm (with glass)
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Weight: 136g
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Water Resistance: 200m / 660ft
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Strap Options: Stainless Steel Bracelet or Rubber
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Clasp: Deployment Buckle
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Lug Width: 20mm
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Lug to Lug: 46mm
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Lume: BGW9 Super Luminous
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Caseback: Display (see-through)
Visual Highlights:
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Clean dial layout with large numerals and date window
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Domed crystal reflects light subtly — adds a retro dive aesthetic
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Screw-down crown and caseback with clear mechanical view
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Lume shot confirms strong night visibility
FAQ
What movement does it use?
A Japan NH35A automatic with hacking and hand-winding, viewable via the display caseback.
Is it suitable for real water use?
Yes—rated 200M. Great for swimming, snorkeling, and recreational diving. Ensure the crown is fully screwed down before contact with water. Not for saturation diving.
What are the dimensions?
Case 39mm; thickness about 13mm including crystal; 46mm lug-to-lug; 20mm lug width.
What crystal and lume are used?
A domed sapphire crystal for scratch resistance and BGW9 Super Luminous on hands, markers, and bezel for blue night visibility.
Bracelet or rubber?
Variants ship on a stainless bracelet with micro-adjust clasp or rubber strap. The 20mm lugs accept most aftermarket options.
How heavy is it?
Approx. 136g on bracelet (varies by strap).
Does it have a screw-down crown and caseback?
Yes—both are screw-down for improved water resistance.
Can I regulate the movement?
The NH35A is serviceable and can be regulated by a competent watchmaker. Follow the brand’s service guidance.
Customer Reviews
★ ★ ★ ★ ★ Perfect everyday diver
“The 39mm size and 46mm L2L wear beautifully. Micro-adjust on the clasp makes dialing the fit super easy.” – J. Carter
★ ★ ★ ★ ☆ Lume monster, vintage vibe
“BGW9 pops bright blue all night and the domed sapphire adds a classy retro look. Lost one star only because I prefer a clasp with more holes.” – M. Navarro
★ ★ ★ ★ ★ Reliable NH35A, smooth bezel
“Mine runs +6s/day out of the box. Bezel action is crisp and the display back is a nice touch at this price.” – R. Singh
★ ★ ★ ★ ★ Great in the water
“Took it snorkeling—no fog, no issues. Screw-down crown inspires confidence and the rubber strap is super comfortable.” – A. Lewis
★ ★ ★ ★ ★ Strap-monster
“20mm lugs mean endless options. Looks killer on blue FKM, canvas, or the stock bracelet.” – K. Cho
SHIPPING
We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.
Do you ship worldwide?
Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.
What about customs?
We are not responsible for any custom fees once the items have been shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.
How long does shipping take?
Shipping time varies by location. These are our estimates:| Location | *Estimated Shipping Time |
|---|---|
| United States | 5-20 Business days |
| Canada, Europe | 5-20 Business days |
| Australia, New Zealand | 5-20 Business days |
| Central & South America | 5-25 Business days |
| Asia | 5-20 Business days |
| Africa | 5-25 Business days |
Do you provide tracking information?
Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.
My tracking says “no information available at the moment”.
For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.
Will my items be sent in one package?
For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.
If you have any other questions, please contact us and we will do our best to help you out.
RETURNS
Order cancellation
All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.
Refunds
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- If you did not receive the product within the guaranteed time (45 days not including 1-3 day processing) you can request a refund or a reshipment.
- If you received the wrong item you can request a refund or a reshipment.
- If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.
We do not issue the refund if:
- Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
- Your order did not arrive due to exceptional circumstances outside the control of jwlraddicts.com (i.e. not cleared by customs, delayed by a natural disaster).
- Other exceptional circumstances outside the control of jwlraddicts.com.
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
Exchanges
If for any reason you would like to exchange your product, perhaps for a different size in clothing, you must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
Order cancellation
All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.
Refunds
Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:
- If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
- If you received the wrong item you can request a refund or a reshipment.
- If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.
We do not issue the refund if:
- Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
- Your order did not arrive due to exceptional circumstances outside the control of bestsellers-high-ticket.sellviastore.com (i.e. not cleared by customs, delayed by a natural disaster).
- Other exceptional circumstances outside the control of //bestsellers-high-ticket.sellviastore.com
*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page
If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.
Exchanges
If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.
Please do not send your purchase back to us unless we authorise you to do so.
Customer Reviews
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Better than i expected and one of my favourite everyday watch
Lovely finishing for the price
A beautiful looking watch from Seestern. Fit and finish looks great and it was received earlier than expected. A great addition to my collection.
This watch is amazing. It has the very best dial legibility and the bracelet is the best I've seen even in comparison to 2-3 thousand dollar watches. The fit of the bracelet is so good I sometimes forgot I'm wearing a watch. In addition to costing 10 thousand dollars less it's about 30 grams lighter. Why would I buy the original when I can have this amazing watch. For arguments sake let's say the seagull movement fails in the future. There is so much room in the case you could put whatever movement you want, eta, miyota, selita, the sky's the limit. I really do feel this is the perfect watch.
Great watch.Everything is perfect,I’m really happy that I bought this.Lume is good as well!!Wrist is 7 1/4” for reference.
Simply lovely.
An incredible watch! Well done.
The texture is about the same as an Omega Tag Heuer from the early to mid 2000s☺️ It's quite usable~
Outstanding watch, the improvements over the s434 is well worth the upgrade.
Really nice watch.
solid watch at great price
Just a fantastic looking watch with great quality. The lume is still bright in the morning. The on the fly bracelet adjustment is very helpful.
This is an amazing watch for the price. Really nicely made, great lume and a work horse Seiko NH35. Really really impressed! Recommended
Very nice tribute to the SeaQ glassworks. Very good workmanship. To recommend.
The watch is beautiful. I wish to thank the store for great support.
Very fast shipping, the watch was already with me after 10 days. The watch has a good price/performance ratio. Nicely processed.
Very nice watch
Very pleased with the watch! Great value for money and delivered to the UK in just over a week. My first Seestern but won't be my last.