Seiko Cal. 6312 - 306

Released in 1991, the Cal. 6312 with design code 306 was part of Seiko's domestic market collection. It features a Black dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-a5f7f014027a]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1991

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