Seiko Cal. 5663 - 371

The Seiko 5663-371 represents an important milestone in Seiko's 1993 lineup. Powered by the 5663 caliber with 33j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-1f5ede9dbb6e]

Also known as: Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1993

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