Seiko Cal. 5663 - 191

The Seiko 5663-191 represents an important milestone in Seiko's 1979 lineup. Powered by the 5663 caliber with 19j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-d63ef9fe8cba]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1979

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