Seiko Cal. 6638 - 598

The 6638-598 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6638 caliber with 18j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-0eed60d25d60]

Also known as: Samurai, Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

45mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1971

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