Seiko Cal. 6391 - 135

The Seiko 6391-135 represents an important milestone in Seiko's 1972 lineup. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-69a32293a269]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

43mm

Case Thickness

11.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1972

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