Seiko Cal. 6657 - 260

The Seiko 6657-260 represents an important milestone in Seiko's 1978 lineup. Powered by the 6657 caliber with 35j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-ab20c87ad5a8]

Also known as: Navigator, Flighty

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1978

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