Seiko Cal. 6377 - 412

This Hand-Winding model from 1989 features a 39mm Hardlex-Coated Steel case. The Inner Rotating bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-3db551c84867]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1989

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