Seiko Cal. 6657 - 325

This Spring Drive model from 1972 features a 38mm Titanium case. Powered by the 6657 caliber with 29j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-b8bbb8f53d35]

Also known as: Navigator, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Champagne

Jewels

29j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1972

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