Seiko Cal. 4461 - 721

The Seiko 4461-721 represents an important milestone in Seiko's 1973 lineup. Powered by the 4461 caliber with 31j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-c5a59af3add9]

Also known as: Tuna, Bellmatic

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

15.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1973

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