Seiko Cal. 6638 - 368

The 6638-368 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-dd02ce1df5e4]

Also known as: Samurai, Shogun

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Navy

Jewels

31j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1968

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