Seiko Cal. 5642 - 316

The Seiko 5642-316 represents an important milestone in Seiko's 1969 lineup. Powered by the 5642 caliber with 17j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-8f5b36a68d22]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

41mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1969

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