Seiko Prospex Watch Automatic 200m Diver Spb143j1
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Seiko PROSPEX SPB143J1 Automatic 200M Diver's Watch – Built for Performance, Designed for Everyday Wear
The Seiko PROSPEX SPB143J1 is a premium automatic diver's watch, combining iconic 1965 heritage design with modern durability and precision. Featuring a 40.5mm stainless steel case, 200M water resistance, and the powerful Seiko 6R35 movement with a 70-hour power reserve, this watch is made to perform under pressure and look exceptional in any setting.
Crafted in Japan and ISO-certified for diving, the SPB143J1 is as comfortable in the depths of the ocean as it is in the boardroom. Its clean sunburst grey dial, sapphire crystal, and robust stainless steel bracelet give it a timeless, versatile appeal.
Key Features:
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Model: SPB143J1 (Japan Domestic Market)
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Movement: Seiko 6R35 Automatic with manual winding
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Power Reserve: Approximately 70 hours
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Case Size: 40.5mm diameter, 13.2mm thickness
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Case Material: Stainless steel with super-hard coating
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Crystal: Dual-curved sapphire with anti-reflective coating
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Water Resistance: 200 metres (ISO-certified for diving)
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Dial: Grey sunburst with applied indices and Lumibrite
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Bracelet: Stainless steel with three-fold clasp and diver extension
What's Included:
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Brand new Seiko SPB143J1 watch
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standard Seiko packaging
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Instruction manual and warranty booklet
This is a top-tier dive watch that delivers exceptional build quality, reliable performance, and a clean, vintage-inspired aesthetic. Whether you're a collector, diver, or simply looking for a high-performance timepiece with heritage styling, the SPB143J1 is one of the finest choices in the Seiko PROSPEX lineup.
Packaging: supplied in standard Seiko packaging. This applies to all models, including Special and Limited Editions.
Sizing Reference
The following size conversions are provided as a general reference. Fit and sizing may vary by designer, style, and construction. For additional assistance, our concierge team is available to help.
Women | Men | Footwear | Men’s Belts | Women’s Belts
Women’s Apparel
| US Size | IT Size | EU Size | JP Size | CN Size |
|---|---|---|---|---|
| 0 | 36 | 32 | 5 | 155/76A |
| 2 | 38 | 34 | 7 | 155/80A |
| 4 | 40 | 36 | 9 | 160/84A |
| 6 | 42 | 38 | 11 | 165/88A |
| 8 | 44 | 40 | 13 | 170/92A |
| 10 | 46 | 42 | 15 | 175/96A |
| 12 | 48 | 44 | 17 | 175/100A |
| 14 | 50 | 46 | 19 | 180/104A |
Men’s Apparel
| US Size | IT Size | EU Size | JP Size | CN Size |
|---|---|---|---|---|
| XS | 44 | 44 | S | 165/84A |
| S | 46 | 46 | M | 170/88A |
| M | 48 | 48 | L | 175/92A |
| L | 50 | 50 | LL | 180/96A |
| XL | 52 | 52 | 3L | 185/100A |
| XXL | 54 | 54 | 4L | 190/104A |
Footwear — Size Conversion
| EU | US Women | US Men | UK | IT | JP (cm) | CN |
|---|---|---|---|---|---|---|
| 35 | 5 | 3.5 | 2.5 | 35 | 22 | 220 |
| 36 | 5.5 | 4 | 3 | 36 | 22.5 | 225 |
| 36.5 | 6 | 4.5 | 3.5 | 36.5 | 23 | 230 |
| 37 | 6.5 | 5 | 4 | 37 | 23.5 | 235 |
| 38 | 7 | 5.5 | 4.5 | 38 | 24 | 240 |
| 38.5 | 7.5 | 6 | 5 | 38.5 | 24.5 | 245 |
| 39 | 8 | 6.5 | 5.5 | 39 | 25 | 250 |
| 40 | 8.5 | 7 | 6 | 40 | 25.5 | 255 |
| 40.5 | 9 | 7.5 | 6.5 | 40.5 | 26 | 260 |
| 41 | 9.5 | 8 | 7 | 41 | 26.5 | 265 |
| 42 | 10 | 8.5 | 7.5 | 42 | 27 | 270 |
| 42.5 | 10.5 | 9 | 8 | 42.5 | 27.5 | 275 |
| 43 | 11 | 9.5 | 8.5 | 43 | 28 | 280 |
| 44 | 11.5 | 10 | 9 | 44 | 28.5 | 285 |
| 44.5 | 12 | 10.5 | 9.5 | 44.5 | 29 | 290 |
| 45 | 12.5 | 11 | 10 | 45 | 29.5 | 295 |
| 46 | 13 | 12 | 11 | 46 | 30 | 300 |
| 47 | 13.5 | 12.5 | 11.5 | 47 | 30.5 | 305 |
| 48 | 14 | 13 | 12 | 48 | 31 | 310 |
Most luxury footwear uses EU sizing. Always refer to the designer’s fit notes, as sizing may vary slightly by brand and style.
How to Measure Your Foot
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Place your foot flat on a piece of paper against a wall.
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Mark the tip of your longest toe.
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Measure the distance from the wall to the mark in centimeters (cm).
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Match that measurement to the JP (cm) column in the chart above.
Example explanation you could place below the chart:
The JP column represents foot length in centimeters. If your foot measures approximately 25 cm, you would typically wear EU 39 / US Women 8. Because designer sizing can vary slightly, this method provides the most accurate reference when selecting luxury footwear.
👔 Men’s Belt Size Conversion
| US Waist (in) | EU / IT Belt Size | Waist (cm) |
|---|---|---|
| 28–30 | 85 | 71–76 |
| 30–32 | 90 | 76–81 |
| 32–34 | 95 | 81–86 |
| 34–36 | 100 | 86–91 |
| 36–38 | 105 | 91–97 |
| 38–40 | 110 | 97–102 |
| 40–42 | 115 | 102–107 |
| 42–44 | 120 | 107–112 |
👗 Women’s Belt Size Conversion
| US Size | US Waist (in) | EU / IT Belt Size | Waist (cm) |
|---|---|---|---|
| XS | 24–26 | 75 | 61–66 |
| S | 26–28 | 80 | 66–71 |
| M | 28–30 | 85 | 71–76 |
| L | 30–32 | 90 | 76–81 |
| XL | 32–34 | 95 | 81–86 |
| XXL | 34–36 | 100 | 86–91 |
For personalized sizing guidance, our concierge team is available to assist with any questions before purchase.
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Shipping information
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Returns & Refunds
We want you to shop with confidence at STORE 7994. If your purchase does not meet expectations, eligible items may be returned under the conditions below.
Return Eligibility
Items must be unused, unworn, unwashed, and in their original condition, with all tags, packaging, accessories, authenticity materials, and documentation included. Items showing signs of wear, alteration, damage, or use will not be accepted.
Return Window
For orders delivered within the United States, return requests must be initiated within 10 calendar days of delivery.
For orders delivered within the European Union and other international destinations, return requests must be initiated within 14 calendar days of delivery.
Where applicable consumer-protection laws provide additional mandatory rights, those requirements will apply.
Return Shipping
Customers are responsible for return shipping costs when returning an item because of preference, sizing, fit, or a change of mind.
If an item arrives defective, damaged, incorrect, or materially different from what was ordered, STORE 7994 will arrange an appropriate return method at no additional cost.
Luxury Items
A 7% restocking fee applies to approved discretionary returns of merchandise with a purchase price exceeding $1,000 USD. The fee will be deducted from the refund.
This restocking fee does not apply to items confirmed to have arrived damaged, defective, incorrect, or materially different from what was ordered.
Non-Returnable Items
For hygiene and product-integrity reasons, the following items are final sale once opened or used:
- Underwear and intimate apparel
- Perfumes, colognes, fragrances, and personal-care products
- Merchandise identified as final sale or non-returnable
- Any item that has been worn, washed, used, altered, or damaged after delivery
These exclusions do not limit any rights relating to merchandise received damaged, defective, or incorrect.
Made-to-Order Items
Custom-designed, personalized, and made-to-order products—including STORE 7994 signature and custom hoodies—are created specifically for each customer and are final sale.
These items are not eligible for return or exchange unless they arrive defective, damaged, incorrect, or materially different from what was ordered. If you experience an issue, please contact us and we will make it right.
International Shipping & Duties
Many of our products ship directly from trusted international partners. Any applicable customs duties, import taxes, or related charges may be displayed or calculated at checkout.
Where applicable, these government-imposed charges are generally non-refundable unless reimbursement is required by law or authorized by the appropriate customs authority.
Refunds & Applicable Deductions
STORE 7994 does not charge a standard return-processing fee.
Approved refunds are issued to the original payment method after the returned merchandise has been received and inspected. Please allow up to 10 business days for refund processing.
Any applicable and previously disclosed luxury-item restocking fee, return-label cost, or non-refundable international charge will be reflected in the final refund amount.
Shipping Policy
Complimentary shipping is offered on orders over $300. Orders below this threshold are subject to the standard shipping rates displayed at checkout.
