Seiko Cal. 5661 - 387

Released in 1975, the Cal. 5661 with design code 387 was part of Seiko's domestic market collection. It features a Black dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-9aee69af3349]

Also known as: Flighty

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1975

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