Seiko Cal. 4561 - 531

The Seiko 4561-531 represents an important milestone in Seiko's 1965 lineup. Powered by the 4561 caliber with 34j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-5eb11db95330]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

34j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1965

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