Seiko Cal. 6377 - 558

Seiko 6377-558

The Seiko 6377-558 represents an important milestone in Seiko's 1976 lineup. Powered by the 6377 caliber with 17j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-9ca89b713d18]

Also known as: Helmet, Sportsmatic

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
40mm
Case Thickness
9.1mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
80m
Dial Color
Burgundy
Jewels
17j
Frequency
36,000 bph
Power Reserve
72 hours
Year
1976

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seikata-wm-9ca89b713d18