Seiko Cal. 3890 - 257

The Seiko 3890-257 represents an important milestone in Seiko's 1983 lineup. The Inner Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-3ed3af9f56a0]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1983

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