Seiko Cal. 6381 - 591

Seiko 6381-591

The Seiko 6381-591 represents an important milestone in Seiko's 1978 lineup. Powered by the 6381 caliber with 32j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-431ea0efcb04]

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
13.4mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Champagne
Jewels
32j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1978

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