Seiko Cal. 6321 - 438

The 6321-438 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6321 caliber with 24j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-dea6dbc1b858]

Also known as: Bullhead, Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1981

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