Seiko Cal. 4537 - 502

This Spring Drive model from 1991 features a 42mm Two-Tone case. It features a Cream dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-f1b0d1fab24c]

Also known as: Tuna, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1991

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