Seiko Cal. 6381 - 270

Seiko 6381-270

The Seiko 6381-270 represents an important milestone in Seiko's 1978 lineup. Powered by the 6381 caliber with 32j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-7d69f88981ce]

Also known as: Sumo, Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
36mm
Case Thickness
15.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
200m
Dial Color
Black
Jewels
32j
Frequency
36,000 bph
Power Reserve
66 hours
Year
1978

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