Seiko Cal. 4528 - 905

The 4528-905 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4528 caliber with 21j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-b0a2e9e455b1]

Also known as: Monster, Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1985

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