Seiko Cal. 4561 - 820

The Seiko 4561-820 represents an important milestone in Seiko's 1976 lineup. Powered by the 4561 caliber with 35j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-8af2b27f8553]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

190m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1976

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