Seiko Cal. 4537 - 360

This Spring Drive model from 1967 features a 44mm Titanium case. It features a Navy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-c89dedeb87da]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

12.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1967

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