Seiko Cal. 6377 - 612

Seiko 6377-612

The Seiko 6377-612 represents an important milestone in Seiko's 1981 lineup. Powered by the 6377 caliber with 30j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-435839a3da79]

Also known as: Sumo, Tuna

Specifications

Movement
Quartz
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
10.8mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
White
Jewels
30j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1981

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