Seiko Cal. 6637 - 754

This Automatic model from 1968 features a 42mm PVD Black case. Powered by the 6637 caliber with 30j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-42a9eeeecd25]

Also known as: Panda

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1968

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