Seiko Cal. 6321 - 660

The 6321-660 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6321 caliber with 27j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-43db1edbd727]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1990

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