Seiko Cal. 6371 - 698

This Automatic model from 1977 features a 42mm Titanium case. Powered by the 6371 caliber with 31j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-f90c373709f1]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1977

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