Seiko Cal. 6644 - 779

Seiko 6644-779

The 6644-779 is a sought-after Quartz piece from Seiko's golden era. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-3bf97a4ec67b]

Also known as: Helmet, Arnie

Specifications

Movement
Quartz
Case Material
Two-Tone
Case Width
46mm
Case Thickness
14.6mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
180m
Dial Color
Green
Jewels
20j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1971

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