Seiko Cal. 6638 - 293

The Seiko 6638-293 represents an important milestone in Seiko's 1965 lineup. Powered by the 6638 caliber with 18j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-6beb63aea8a0]

Also known as: Bullhead, Arnie

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

18j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1965

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