Seiko Cal. 4528 - 432

The 4528-432 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4528 caliber with 32j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-6c2712e44c7c]

Also known as: Monster, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1971

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