Seiko Cal. 6178 - 621

Released in 1977, the Cal. 6178 with design code 621 was part of Seiko's domestic market collection. It features a Navy dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-40c8aa66cd7d]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1977

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