Seiko Cal. 5691 - 661

The Seiko 5691-661 represents an important milestone in Seiko's 1998 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-5b29f48d4c33]

Also known as: Turtle

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1998

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