Seiko Cal. 7139 - 285

The 7139-285 is a sought-after Hand-Winding piece from Seiko's golden era. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-21fa3a35d368]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1993

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