Seiko Cal. 7137 - 220

This Hand-Winding model from 1971 features a 45mm Stainless Steel case. Powered by the 7137 caliber with 30j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-56290d6796a8]

Also known as: Bullhead, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1971

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