Seiko Cal. 5661 - 507

The 5661-507 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5661 caliber with 20j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-3bc2ef6326af]

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1967

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