Seiko Cal. 6644 - 421

Seiko 6644-421

The 6644-421 is a sought-after Solar piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-fbe778fe2c2e]

Also known as: Samurai, Arnie

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
9.3mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
100m
Dial Color
Silver
Jewels
22j
Frequency
21,600 bph
Power Reserve
70 hours
Year
1971

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