Seiko Cal. 4521 - 413

The Seiko 4521-413 represents an important milestone in Seiko's 1970 lineup. It features a White dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-7e43cabb1201]

Also known as: UFO, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1970

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