Seiko Cal. 5661 - 315

The Seiko 5661-315 represents an important milestone in Seiko's 1971 lineup. The Bidirectional bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-efc1c3fe16eb]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Navy

Jewels

20j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1971

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