Seiko Cal. 4537 - 398

The Seiko 4537-398 represents an important milestone in Seiko's 1986 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-97713176252f]

Also known as: Sumo, World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1986

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