Seiko Cal. 4498 - 639

The Seiko 4498-639 represents an important milestone in Seiko's 1980 lineup. Powered by the 4498 caliber with 32j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-205431d8b30f]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1980

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