Seiko Cal. 5616 - 690

This Hand-Winding model from 1970 features a 37mm Two-Tone case. Powered by the 5616 caliber with 33j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-125467382ab5]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1970

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