Seiko Cal. 6641 - 561

This Spring Drive model from 1984 features a 42mm PVD Black case. The Coin-Edge bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-203e03c12e91]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1984

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