Seiko Cal. 4561 - 309

The 4561-309 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4561 caliber with 28j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-8385932bbadf]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1974

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