Seiko Cal. 3864 - 157

This Hand-Winding model from 1975 features a 40mm Two-Tone case. Powered by the 3864 caliber with 28j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-6715de178ff0]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1975

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