Seiko Cal. 5639 - 287

This Automatic model from 1978 features a 41mm PVD Black case. Powered by the 5639 caliber with 22j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-abd77ee0b709]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

22j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1978

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