Seiko Cal. 5661 - 956

The 5661-956 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5661 caliber with 20j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-4a8c0640c5be]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1965

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