Seiko Cal. 6391 - 917

The Seiko 6391-917 represents an important milestone in Seiko's 1967 lineup. It features a Green dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-f899e44d3034]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1967

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