Seiko Cal. 4461 - 433

This Hand-Winding model from 1977 features a 44mm PVD Black case. Powered by the 4461 caliber with 36j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-3e2f33d39b44]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1977

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