Seiko Cal. 7057 - 528

This Spring Drive model from 1988 features a 40mm Hardlex-Coated Steel case. Powered by the 7057 caliber with 36j jewels beating at 36,000 bph, it delivers a 56 hours power reserve. [seikata-wm-1c18f035405e]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1988

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