Seiko Cal. 6647 - 396

Seiko 6647-396

The Seiko 6647-396 represents an important milestone in Seiko's 1969 lineup. Powered by the 6647 caliber with 33j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-42d1607e23ee]

Also known as: Tuna, UFO

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
41mm
Case Thickness
15.3mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
120m
Dial Color
Green
Jewels
33j
Frequency
21,600 bph
Power Reserve
36 hours
Year
1969

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