Seiko Cal. 6657 - 444

The Seiko 6657-444 represents an important milestone in Seiko's 1975 lineup. Powered by the 6657 caliber with 26j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-4586092f1879]

Also known as: Shogun

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1975

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