Seiko Cal. 5689 - 665

This Automatic model from 1966 features a 37mm Two-Tone case. Powered by the 5689 caliber with 31j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-e044dda11a07]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1966

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