Seiko Cal. 6638 - 739

The Seiko 6638-739 represents an important milestone in Seiko's 1997 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-f7d4767c7885]

Also known as: Goldfeather, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1997

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