Seiko Cal. 4561 - 988

The Seiko 4561-988 represents an important milestone in Seiko's 1978 lineup. Powered by the 4561 caliber with 28j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-72aa5c25ec27]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1978

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