Seiko Cal. 6641 - 337

The Seiko 6641-337 represents an important milestone in Seiko's 1998 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-f6913f96432e]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1998

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