Seiko Cal. 6638 - 721

The 6638-721 is a sought-after Automatic piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-61294c63a416]

Also known as: Shogun

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1972

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