Seiko Cal. 4577 - 437

Released in 1972, the Cal. 4577 with design code 437 was part of Seiko's domestic market collection. Powered by the 4577 caliber with 32j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-750d6af92d17]

Also known as: Shogun, UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Cream

Jewels

32j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1972

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