Seiko Cal. 5646 - 958

The Seiko 5646-958 represents an important milestone in Seiko's 1972 lineup. It features a Black dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-29d174b2d28a]

Also known as: Turtle, Crown

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1972

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