Seiko Cal. 6643 - 165

Seiko 6643-165

The Seiko 6643-165 represents an important milestone in Seiko's 1977 lineup. Powered by the 6643 caliber with 20j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-53938b382705]

Also known as: Samurai, Baby Tuna

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
44mm
Case Thickness
12.8mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Silver
Jewels
20j
Frequency
21,600 bph
Power Reserve
40 hours
Year
1977

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seikata-wm-53938b382705