Seiko Cal. 5616 - 737

The Seiko 5616-737 represents an important milestone in Seiko's 1972 lineup. Powered by the 5616 caliber with 36j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-22fbe816ccb4]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

13.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1972

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