Seiko Cal. 5641 - 647

This Automatic model from 1986 features a 39mm Titanium case. Powered by the 5641 caliber with 17j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-71d273ad0fd9]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1986

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