Seiko Cal. 6330 - 391

The 6330-391 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-817367d6a961]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1970

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