Seiko Cal. 4537 - 751

This Spring Drive model from 1978 features a 45mm Titanium case. It features a Green dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-4cbeb5e562ea]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

15.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1978

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