Seiko Cal. 6637 - 193

This Quartz model from 1967 features a 36mm Titanium case. Powered by the 6637 caliber with 20j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-027355e0efb7]

Also known as: Rally, Bellmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1967

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