Seiko SPB503 Prospex Alpinist automatic watch with teal dial and stainless steel bracelet, front view.
Close-up of Seiko SPB503 Alpinist teal dial with inner rotating compass bezel and gold LumiBrite hands
Seiko SPB503 Prospex Alpinist side profile showing 12.7mm slim case, Diashield coating, and screw-down crown at 4 o'clock.
Seiko SPB503 Alpinist exhibition caseback with Cal. 6R55 automatic movement and engraved mountain emblem
Seiko SPB503 Prospex Alpinist automatic watch with teal dial and stainless steel bracelet, front view. Close-up of Seiko SPB503 Alpinist teal dial with inner rotating compass bezel and gold LumiBrite hands Seiko SPB503 Prospex Alpinist side profile showing 12.7mm slim case, Diashield coating, and screw-down crown at 4 o'clock. Seiko SPB503 Alpinist exhibition caseback with Cal. 6R55 automatic movement and engraved mountain emblem

Seiko Luxe Watches SPB503 Prospex Alpinist

SKU: SPB503

$995.00

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Enter ZIP code, if needed: 33142

3 year warranty included

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Seiko Luxe Watches SPB503 Prospex Alpinist


The Seiko SPB503 Prospex Alpinist is the most advanced generation of one of watchmaking's most iconic field watches — now available at Lexor Miami, your authorized Seiko dealer in the USA.

Born in 1959 for Japanese mountaineers, the Seiko Alpinist celebrates its 30th anniversary in 2025 with a complete 8th-generation refresh. The SPB503 stands out with a striking teal "Tealpine" dial, a new Diashield scratch-resistant coating on the stainless steel case, and an upgraded Cal. 6R55 automatic movement delivering a 72-hour power reserve — all while maintaining the beloved inner rotating compass bezel that defines the Alpinist identity.

At 39.5mm wide and just 12.7mm thin, the SPB503 wears with remarkable versatility: rugged enough for the trail, refined enough for the boardroom. The sapphire crystal with anti-reflective coating and magnifier ensures perfect legibility in any light. With 200 meters of water resistance and a screw-down crown, this is a field watch built to go anywhere you do.

Every Seiko SPB503 purchased at Lexor Miami includes the official 3-year Seiko manufacturer warranty, original box and papers, and free insured shipping across the USA. With over 3,100 five-star Google reviews and 20+ years as an authorized watch dealer, Lexor Miami is your trusted source for authentic luxury timepieces in Miami and nationwide.

Key features

• 8th-generation Seiko Prospex Alpinist — 30-year anniversary model (2025)
• Automatic movement Cal. 6R55 — 72-hour power reserve with manual winding
• Diashield scratch-resistant coating — new ultra-hard ceramic PVD on stainless steel case
• Sapphire crystal with magnifier — anti-reflective coating on inner surface for maximum legibility
• Inner rotating compass bezel — operated via crown at 4 o'clock for true field navigation
• 200M water resistance — screw-down crown, suitable for serious water activities
• Teal "Tealpine" dial — distinctive blue-green colorway with LumiBrite hands and indices
• Steel bracelet — 39.5mm case, 12.7mm thin, 46.4mm lug-to-lug, 20mm lug width
• Transparent exhibition caseback — engraved with the signature Alpinist mountain emblem
• Official 3-year Seiko manufacturer warranty — purchased from authorized US dealer
• Free insured shipping — ships from Miami, FL across the entire USA

Specification

Brand: Seiko
Collection: Seiko Luxe Prospex Alpinist
Model reference: SPB503J1
Case diameter: 39.5 mm
Case thickness: 12.7 mm
Lug-to-lug: 46.4 mm
Lug width: 20 mm
Case material: Stainless steel with Diashield super-hard coating
Crystal: Sapphire with magnifier and anti-reflective coating (inner)
Dial color: Teal / Blue-green ("Tealpine")
Luminescence: LumiBrite on hands and indices
Movement: Caliber 6R55 — automatic with manual winding
Jewels: 24
Power reserve: Approx. 72 hours (3 days)
Frequency: 21,600 vph (3 Hz)
Accuracy: +25 to -15 seconds per day
Functions: Hours, minutes, seconds, date, stop-second hand
Compass bezel: Inner rotating, crown-operated at 4 o'clock
Water resistance: 200 m (20 bar)
Magnetic resistance: 4,800 A/m
Bracelet: Stainless steel, three-fold clasp with push-button release
Watch weight: 88 g
Caseback: Transparent screw caseback with mountain emblem engraving
Country of origin: Japan
Warranty: 3-year official Seiko manufacturer warranty

100% authentic. 3,100+ five-star reviews. Authorized Seiko dealer since 2000.
Free insured shipping across the USA. In-store pickup available in Miami, FL.


At Lexor Miami, we want you to love your purchase. If for any reason you're not satisfied, you may return any unopened and unused merchandise in its original condition and packaging within 30 days of delivery.

  • Return Eligibility
- Items must be unopened, unused, and in original condition and packaging.
- Gift With Purchase must also be returned in original condition to qualify for a full refund.
- Testers (if purchased) are non-returnable.
- Products purchases from Outlet are non-returnable.
- We are not responsible for unclaimed, undelivered, or lost packages unless due to our error.

  • Exchanges & Defective Items
If your order arrives damaged, defective, or incorrect, we’ll make it right. You may choose:
- A full refund to your original payment method, or
- A replacement of the same item (if in stock)

Please notify us within three (3) business days of receiving your order.
Email us at Info@LexorMiami.com before sending anything back.

  • Return Process
1. Contact us first at Info@LexorMiami.com to request an RA (Return Authorization).
2. Once approved, we’ll email you a prepaid return shipping label—at no cost to you.
3. Include your packing slip or proof of purchase in the return package.

Returns without RA may be delayed or not accepted.

  • Return Address:
Lexor Miami
2371 NW 20th St
Miami, FL 33142
United States

  • Shipping Your Return
- For approved returns, we provide a prepaid return shipping label. Free Return.
- For items over $75, we recommend using a trackable shipping service or purchasing shipping insurance, especially if not using our prepaid label.

Shipping To return your product, you should mail your product to: 2371 NW 20th St, Miami, FL 33142, United States, Miami FL 33142, United States

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.

If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

Gift with purchase needs to be returned in original condition with the purchased product.

 

Free Shipping Policy

Free shipping only applies to purchases over $150.
Orders under $150 do not qualify for free shipping and standard shipping and handling fees will apply.

We don't sell or ship outside the 48 Contiguous United States. We don't sell or ship to Freight Forwarding or delivery companies. We do not accept  payments from ourside the US.

Standard U.S. Shipping (4-7 business days)

$6.95 charge for all U.S. orders. U.S. orders will be shipped via UPS, FedEx, or U.S. Postal Service. Most packages arrive within 4-7 business days. (not a guaranteed service)

Express U.S. Shipping (2-3 business days guaranteed)

2-3 business days guaranteed.
Excluding weekends. Not available to P.O. Boxes.
Starting at $11.95 depending on weight of shipment ordered.

1-2 Business Day Shipping (1-2 business day guaranteed)

1-2  business day guaranteed.
Order by 12pm est for delivery next 2 business day.
Excluding weekends. Not available to P.O. Boxes.
Starting at $15.95 depending on weight of shipment ordered.

 

https://www.lexormiami.com/ I does not ship DOT-restricted items to Alaska, Hawaii, Puerto Rico, APO/FPO/DPO or International addresses. Also only ship 48 contiguous states, We don’t Ship Apo, Hawaii and Alaska.  Because we are only shipping through ground shipping contiguous states.