Seiko Cal. 4521 - 455

This Spring Drive model from 1973 features a 38mm Two-Tone case. It features a White dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-b49e338cb03c]

Also known as: Helmet, Arnie

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1973

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