Seiko Cal. 7177 - 646

Seiko 7177-646

The Seiko 7177-646 represents an important milestone in Seiko's 1978 lineup. Powered by the 7177 caliber with 36j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-3c84329829b1]

Also known as: Monster, Navigator

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
37mm
Case Thickness
15.2mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
100m
Dial Color
Cream
Jewels
36j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1978

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