Seiko Cal. 6312 - 550

The Seiko 6312-550 represents an important milestone in Seiko's 1991 lineup. It features a Navy dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-a13c52bca997]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1991

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