Seiko Cal. 6678 - 543

The Seiko 6678-543 represents an important milestone in Seiko's 1965 lineup. It features a Cream dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-efcdd2c7ca6d]

Also known as: Sumo, Bellmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1965

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