Seiko Cal. 4577 - 992

Released in 1973, the Cal. 4577 with design code 992 was part of Seiko's domestic market collection. Powered by the 4577 caliber with 23j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-bc64db168bd5]

Also known as: Helmet, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Black

Jewels

23j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1973

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