Seiko Cal. 6658 - 735

Released in 1969, the Cal. 6658 with design code 735 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-a6754bf2dee6]

Also known as: UFO, Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1969

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