Seiko Cal. 4539 - 813

The Seiko 4539-813 represents an important milestone in Seiko's 1969 lineup. It features a Black dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-9228a4a0d0d6]

Also known as: Samurai, Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1969

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