Sea Knight SK02 NH35A Automatic Diver Watch — 40mm, 200m, Ceramic Bezel, Mesh Bracelet
The Sea Knight SK02 is a 40mm Seiko NH35A automatic diver — ceramic unidirectional rotating bezel with luminous 12 o’clock marker, sapphire crystal with blue film coating, C3 Super Luminous on hands and markers, date at 6 o’clock, screw-down crown and caseback, 316L stainless steel case at 14mm, stainless steel mesh bracelet, 200m water resistance. Three dial variants: blue, white and black.
Key Specifications
| Specification | Detail |
|---|---|
| Model | SK02 |
| Case diameter | 40mm (excluding crown) |
| Case thickness | 14mm (including crystal) |
| Lug width | 20mm |
| Case material | 316L stainless steel |
| Crystal | Sapphire with blue film coating |
| Bezel | Ceramic, unidirectional rotating, luminous pip |
| Movement | Seiko NH35A automatic |
| Frequency | 21,600 vph |
| Power reserve | ~41 hours |
| Luminous | C3 Super Luminous — hands and hour markers |
| Date | At 6 o’clock |
| Crown | Screw-down |
| Caseback | Screw-down |
| Bracelet | 316L stainless steel mesh |
| Water resistance | 200m (20 ATM) |
| Warranty | 2 years |
Variants — Three Configurations
SK02 Blue: Deep blue dial — the most classic and broadly appealing dive watch colour. Blue on ceramic black bezel creates the traditional sport diver palette.
SK02 White: Bright white instrument-style dial — the most distinctive and highest-contrast option. White dial divers have a specific vintage reference character; the clean white against the black ceramic bezel creates a very legible display.
SK02 Black: Dark black dial — the most formally understated, reads as tactical and serious. The lowest-profile combination of the three.
Ceramic Bezel
The unidirectional rotating bezel uses a ceramic insert rather than aluminium — the material used on most affordable dive watches. Ceramic (Mohs approximately 8–9) resists scratching significantly better than anodised aluminium (which can be scored by metal contact). On a dive watch used in actual water environments, the bezel insert takes the most surface contact from equipment, wetsuits and underwater obstacles.
The luminous pip at 12 o’clock glows in complete darkness — the bezel’s primary reference point is legible underwater at night without a torch.
Sapphire with Blue Film Coating
The crystal is sapphire with a blue anti-reflective film coating on the inner surface. The blue film reduces glare from overhead light sources and creates a subtle blue tint visible at certain angles — a visual characteristic associated with high-specification dive watch crystals. The sapphire base provides standard Mohs 9 scratch resistance regardless of the coating.
C3 Super Luminous
C3 is the brightest available grade of Super-LumiNova — charges quickly under visible light and emits the most intense and longest-lasting green afterglow in darkness. On a dive watch worn in low-visibility underwater conditions, C3 provides maximum dial legibility. The SK02 applies C3 to both hands and all hour markers — the full dial is readable in complete darkness.
200m — Genuine Dive Rating
200m / 20 ATM with screw-down crown and screw-down caseback is genuine recreational scuba diving specification — safe to depths well beyond the 40m maximum for recreational scuba certification. The screw-down caseback eliminates the exhibition window that can be a sealing weak point on dress-adjacent watches.
Stainless Steel Mesh Bracelet
The steel mesh bracelet provides wrist ventilation (relevant for actual diving — solid-link bracelets trap water), flexible fit across wrist sizes and even weight distribution. The retro tool-watch character of a mesh bracelet on a professional diver specification is a specific collector aesthetic.
Sea Knight in the Diver Range
Sea Knight is a Chinese microbrand dedicated exclusively to dive watches — the SK02 is the brand’s standard NH35A diver specification. Other diver options at Jewelry Addicts:
| Watch | Movement | Water resistance | Bezel |
|---|---|---|---|
| SK02 (this page) | NH35A | 200m | Ceramic |
| Octopus Kraken 007 | PT5000 | 300m | Ceramic (+ ceramic dial) |
| San Martin SN007G V4 | NH35A | 200m | Aluminium |
| Steeldive SD1949S | NH35 | 1000m | — |
| Heimdallr 6105 Bronze | NH35 | 200m | Aluminium |
Choose SK02 for NH35A + ceramic bezel + mesh bracelet at 200m. Choose San Martin SN007G for NH35A + solid-link bracelet at 200m. Choose Octopus Kraken 007 for the full ceramic construction (dial and bezel) and 300m rating.
Who Is the Sea Knight SK02 For?
The SK02 is built for:
- Ceramic bezel buyers who want the scratch-resistant bezel material on an NH35A diver at 200m
- Mesh bracelet buyers who want the steel mesh format on a serious dive specification rather than a fashion watch
- White dial diver buyers specifically — the white instrument dial at 200m with ceramic bezel and C3 lume is a specific and uncommon combination
- NH35A diver buyers who want ceramic over aluminium at 40mm
How It Compares
vs. San Martin SN007G V4 — Both NH35A at 200m, 40–41mm. San Martin uses aluminium bezel on solid-link bracelet. Sea Knight uses ceramic bezel on mesh bracelet. Choose by bezel material and bracelet preference.
vs. Octopus Kraken 007 — Kraken uses PT5000 at 300m with ceramic dial and bezel. SK02 uses NH35A at 200m with ceramic bezel only. Kraken has deeper rating and full ceramic; SK02 has established NH35A movement.
vs. Heimdallr 6105 Bronze — Heimdallr is CuSn8 bronze at 200m on leather. SK02 is 316L steel at 200m on mesh. Steel vs bronze — different patina character and strap format.
More from Jewelry Addicts
- San Martin SN007G V4 Diver — NH35A 200m solid-link alternative
- Octopus Kraken 007 — 300m full ceramic alternative
- Heimdallr 6105 Bronze — bronze 200m alternative
- Steeldive SD1949S Bronze 1000m — extreme water resistance alternative
- Best Automatic Watches Under $200 — full roundup
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 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.
Customer Reviews
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We Think You’ll Love
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Very elegant design for all occasions
Excellent
Nice watch. A very well-made replica. It keeps time accurately.
fantastic, beautiful and precise watch!!!
The level of finish on the watch is amazing. I changed the watch strap from the original mesh strap it comes with. Original strap is difficult to put onto arm.
An exceptional watch. Very beautiful and well-made, the blue-steel color contrasts give it a beautiful touch.
Great watch for the price, worth every euro.
For 100€, this watch is a steal, even without a coupon, this watch (144€) is worth its money. Sapphire crystal with AR coating, 316L stainless steel case and bracelet Milanese band with curved ends.
Well-made watch, resistant to sea baths, very bright in the dark.
I just received the watch and the first impressions are very good. Good finishes, the crown screws well. The Milanese clasp is a bit stiff and you have to figure out how to use it properly. The watch comes without any manual/warranty/instructions like others, just the typical box and the watch.
Beautiful watch, very well made!
Perfect
Perfect
Very nice design!
Looks very good and valuable! Close to the original. Clarity will become apparent in the next few days.
The best
The best
This is a beautiful piece. Unbelievable lume in the dark. Delivered in good time as well.
This is a beautiful piece. Unbelievable lume in the dark. Delivered in good time as well.
Watches beautiful, really in the top!!!