Seiko Cal. 5661 - 507

The Seiko 5661-507 represents an important milestone in Seiko's 1965 lineup. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-79c9da61fdb4]

Also known as: Samurai, Panda

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1965

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