Seiko Cal. 6148 - 643

This Spring Drive model from 1969 features a 40mm Stainless Steel case. Powered by the 6148 caliber with 33j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-d3222be6ace2]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1969

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