Seiko Cal. 6178 - 521

The 6178-521 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-ae379a59ca53]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1983

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