Seiko Cal. 6638 - 754

The 6638-754 is a sought-after Quartz piece from Seiko's golden era. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-d3ce9091bf5f]

Also known as: Bellmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

11.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1967

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