Seiko Cal. 0756 - 640

This Hand-Winding model from 1980 features a 35mm Hardlex-Coated Steel case. Powered by the 0756 caliber with 31j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-9c5d1f0972d2]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1980

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