Seiko Cal. 6637 - 180

This Automatic model from 1978 features a 44mm Gold-Plated case. Powered by the 6637 caliber with 18j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-3b983c6a342b]

Also known as: Silverwave, Bellmatic

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Burgundy

Jewels

18j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1978

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