Seiko Cal. 5687 - 391

The 5687-391 is a sought-after Automatic piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 70m of water resistance. [seikata-wm-5c08062b5c06]

Also known as: Bellmatic, Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

8.6mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1987

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