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SPB377

Seiko

SPB377 Mechanical GMT

Also sold as SPB377J1Japan

In production All SPB references →
Caliber
6R54
Case diameter
39.5mm
Water resistance
200 m
Power reserve
72h

Best price USD 1,018.00 eBay · 8 offers · checked 17 hours ago

Seiko SPB377: caliber 6R54, 39.5 mm case, 200 m water resistance. 8 offers from USD 1,018.00.

Where to buy Last seen when we checked; prices change

8 offers from USD 1,018.00

Source Total
eBay from US · 2 weeks ago Used · USD 800.00 · USD 10.00 USD 810.00 View offer
eBay from HK · 17 hours ago arrives in 16–40 days New · USD 1,010.00 · USD 8.00 Best price USD 1,018.00 View offer
eBay from HK · 17 hours ago arrives in 14–27 days New · USD 1,039.88 · Free USD 1,039.88 View offer
eBay from HK · 17 hours ago arrives in 14–27 days New · USD 1,039.99 · Free USD 1,039.99 View offer
eBay from HK · 17 hours ago arrives in 33–75 days New · USD 1,060.00 · USD 9.00 USD 1,069.00 View offer
eBay from US · 17 hours ago arrives in 2–6 days New · USD 1,092.50 · Free USD 1,092.50 View offer
eBay from US · 17 hours ago arrives in 3–9 days Refurbished · USD 1,099.00 · Free USD 1,099.00 View offer
eBay from JP · 1 week ago Used · USD 1,119.32 · Free USD 1,119.32 View offer
eBay from US · 1 week ago arrives in 5–12 days New · USD 1,150.00 · Free USD 1,150.00 View offer
eBay from JP · 1 week ago Used · USD 1,153.85 · Free USD 1,153.85 View offer

Total shown does not include import duties or taxes — the marketplace did not report them for these listings. Cross-border orders may be charged on delivery.

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Specifications

Specifications from Seiko, Creation Watches, last seen 2026-09-21.

Movement

Caliber
6R54 All 6R54 watches →
Movement
Automatic
Power reserve
72h
Jewels
24

Case & crystal

Case material
Stainless steel (super hard coating)
Case diameter
39.5mm
Case thickness
13.6mm
Lug to lug
46.4mm
Lug width
20mm
Crystal
Curved sapphire crystal

Resistance

Water resistance
200 m
Magnetic resistance
4,800 A/m

Catalogue

Family
SPB
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Variants Same watch, different market or bracelet

Reference Edition Region Band Clasp Weight
SPB377J1 J1 Japan Cow leather Three-fold clasp with push button release —

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