Seiko Cal. 6644 - 556

Seiko 6644-556

The 6644-556 is a sought-after Spring Drive piece from Seiko's golden era. It features a Cream dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-58e624217404]

Also known as: Monster, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
44mm
Case Thickness
9.4mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Cream
Jewels
20j
Frequency
21,600 bph
Power Reserve
69 hours
Year
1995

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seikata-wm-58e624217404