Seiko Cal. 6657 - 418

This Hand-Winding model from 1983 features a 34mm Titanium case. Powered by the 6657 caliber with 25j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-3ad4fd2e1dd9]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1983

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