Seiko Cal. 6649 - 371

This Spring Drive model from 1975 features a 39mm Titanium case. Powered by the 6649 caliber with 25j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-ace39197b7fb]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1975

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