Seiko Cal. 5646 - 821

This Hand-Winding model from 1967 features a 35mm PVD Black case. It features a Green dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-9be3138f5d78]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1967

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