Seiko Cal. 5615 - 663

The Seiko 5615-663 represents an important milestone in Seiko's 1965 lineup. Powered by the 5615 caliber with 36j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-2320ae5ee1cb]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Black

Jewels

36j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1965

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