Seiko Cal. 5210 - 903

The Seiko 5210-903 represents an important milestone in Seiko's 1966 lineup. Powered by the 5210 caliber with 36j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-9f39bfbd2ee8]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

36j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1966

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