Seiko Cal. 6657 - 434

This Hand-Winding model from 1976 features a 45mm Titanium case. Powered by the 6657 caliber with 25j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-8a438c21d1df]

Also known as: Sea Horse, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

25j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1976

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