Seiko Cal. 6680 - 307

The Seiko 6680-307 represents an important milestone in Seiko's 1967 lineup. It features a Black dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-1e580a1cc025]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1967

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