Seiko Cal. 5630 - 137

The 5630-137 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5630 caliber with 29j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-68f3f24adf92]

Also known as: Sumo, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1976

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