Seiko Cal. 5630 - 837

The 5630-837 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5630 caliber with 30j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-4baaa574b470]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1998

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