Seiko Cal. 5646 - 171

The Seiko 5646-171 represents an important milestone in Seiko's 1967 lineup. Powered by the 5646 caliber with 34j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-59a9ee00157b]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

14.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1967

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