Seiko Cal. 6637 - 671

The 6637-671 is a sought-after Quartz piece from Seiko's golden era. It features a Silver dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-c6bd47192e9e]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1969

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