Seiko Cal. 4598 - 650

This Spring Drive model from 1991 features a 43mm Hardlex-Coated Steel case. With its 18mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-d639206d3bc5]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1991

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