Seiko Cal. 5661 - 902

The 5661-902 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5661 caliber with 22j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-50147526199d]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1969

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