Seiko Prospex SPB487J1 'Night of Siam' GMT Thailand Limited Edition 42mm Orange Dial Men's Watch
Seiko Prospex SPB487J1 'Night of Siam' GMT Thailand Limited Edition 42mm Orange Dial Men's Watch
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Product Details
Seiko Prospex SPB487J1 “Night of Siam” is a Thailand-exclusive Limited Edition GMT diver inspired by the orange glow of a Siam sunset. Its vivid orange sunburst dial, black ceramic dive bezel, contrasting GMT hand and stainless-steel bracelet create one of the most distinctive colorways in the Prospex 1968 Heritage GMT family.
The watch is powered by Seiko’s Caliber 6R54 automatic GMT movement with manual winding capability, 24 jewels and approximately 72 hours of power reserve. A curved sapphire crystal, screw-down crown, super-hard coated stainless steel and 200-meter diver’s water resistance provide professional durability. Production is limited to 500 individually numbered pieces.
Technical Specifications
| Brand | Seiko |
| Collection | Prospex Sea |
| Series | 1968 Heritage Diver's GMT — Night of Siam |
| Model / SKU / MPN | SPB487J1 |
| Edition | Thailand Exclusive Limited Edition — 500 pieces |
| Gender | Male |
| Age Group | Adult |
| Condition | New |
| Movement | Automatic GMT with manual winding |
| Caliber | 6R54 |
| Jewels | 24 |
| Power Reserve | Approx. 72 hours / 3 days |
| Functions | Hours, minutes, seconds, date, 24-hour GMT hand |
| Case Material | Stainless steel with super-hard coating |
| Case Diameter | 42.0 mm |
| Case Thickness | 12.9 mm |
| Lug-to-Lug | 48.6 mm |
| Crystal | Curved sapphire crystal |
| Crystal Coating | Anti-reflective coating on inner surface |
| Dial Color | Orange / Sunset Orange |
| Bezel | Black ceramic unidirectional rotating bezel |
| LumiBrite | Hands and indexes |
| Crown | Screw-down |
| Case Back | Screw case back; limited-edition numbering |
| Bracelet | Stainless steel with super-hard coating |
| Clasp | Three-fold clasp with secure lock, push-button release and extender |
| Lug Width | 20 mm |
| Water Resistance | 200 m / 660 ft Diver's |
| Primary Color | Orange / Black / Silver |
Google Merchant attributes: Brand: Seiko; MPN: SPB487J1; Gender: Male; Age group: Adult; Color: Orange/Black/Silver; Material: Stainless steel/Ceramic; Condition: New.
Shipping & Returns
FREE Regular Shipping — 5–6 business days
Complimentary U.S. shipping with live estimated delivery dates shown above.
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Delivery windows are estimates based on business days. Weekends are excluded; U.S. holidays, order verification, destination, or carrier delays may affect arrival. Returns are accepted within 30 days subject to our return policy.
Warranty & Authenticity
Each watch is supplied in its original brand presentation with its unique serial number, original box, warranty card, and applicable manufacturer documentation. The warranty card is activated before the watch is offered for purchase, so no additional registration or activation is required after checkout or after delivery.
Model reference, serial number, and warranty status can be verified at any time through the relevant brand’s available verification channels. Every watch is also inspected by VOLICES before dispatch for authenticity, condition, and package completeness.
In addition to the applicable manufacturer warranty, VOLICES provides a complimentary 1-year limited store warranty for qualifying mechanical or manufacturing defects, subject to our warranty terms. This additional coverage does not replace or limit any manufacturer warranty that may apply.
For warranty assistance, simply contact VOLICES with your order number and watch serial number. Our support team will guide you through the appropriate next step.