Seiko Cal. 4561 - 105

The Seiko 4561-105 represents an important milestone in Seiko's 1980 lineup. Powered by the 4561 caliber with 17j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-0b35d4c489a4]

Also known as: Tuna, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1980

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