Seiko Cal. 6638 - 986

The Seiko 6638-986 represents an important milestone in Seiko's 1992 lineup. Powered by the 6638 caliber with 32j jewels beating at 36,000 bph, it delivers a 40 hours power reserve. [seikata-wm-afddb4697505]

Also known as: Helmet, World Timer

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1992

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