Seiko Cal. 6177 - 635

Seiko 6177-635

The Seiko 6177-635 represents an important milestone in Seiko's 1981 lineup. Powered by the 6177 caliber with 33j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-78c300e9140a]

Also known as: Sumo, World Timer

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
37mm
Case Thickness
10.5mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
90m
Dial Color
Black
Jewels
33j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1981

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seikata-wm-78c300e9140a