Seiko Cal. 5660 - 103

The 5660-103 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5660 caliber with 24j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-eae6fce5d4cb]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

24j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1983

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