Seiko Cal. 6388 - 397

This Hand-Winding model from 1981 features a 45mm Two-Tone case. With its 20mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-eb4649829c44]

Also known as: Tuna, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1981

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