Seiko Cal. 6644 - 517

Seiko 6644-517

This Spring Drive model from 1984 features a 36mm PVD Black case. Powered by the 6644 caliber with 21j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-9f1580684629]

Also known as: Helmet, Flighty

Specifications

Movement
Spring Drive
Case Material
PVD Black
Case Width
36mm
Case Thickness
13.5mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
130m
Dial Color
White
Jewels
21j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1984

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seikata-wm-9f1580684629