Seiko Cal. 6644 - 910

The Seiko 6644-910 represents an important milestone in Seiko's 1965 lineup. It features a Navy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-fcb413446ef3]

Also known as: Tuna, Pogue

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1965

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