Seiko Cal. 4560 - 431

The 4560-431 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4560 caliber with 27j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-6575eb6aa06d]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1994

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