Seiko Cal. 5687 - 815

This Automatic model from 1971 features a 46mm Two-Tone case. Powered by the 5687 caliber with 34j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-9b0b82bfd67c]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1971

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