Seiko Cal. 6344 - 664

The Seiko 6344-664 represents an important milestone in Seiko's 1978 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-96bfce5e19bf]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Champagne

Jewels

32j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1978

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