Seiko Cal. 5638 - 528

This Quartz model from 1985 features a 39mm PVD Black case. Powered by the 5638 caliber with 32j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-d82df7b234d3]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1985

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