Seiko Cal. 6647 - 410

The Seiko 6647-410 represents an important milestone in Seiko's 1968 lineup. It features a Green dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-d98bae743997]

Also known as: Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1968

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