Seiko Cal. 6321 - 978

Released in 1975, the Cal. 6321 with design code 978 was part of Seiko's domestic market collection. Powered by the 6321 caliber with 24j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-6215c1a4399d]

Also known as: Golden Tuna, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1975

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