Seiko Cal. 4591 - 163

This Hand-Winding model from 1971 features a 34mm Two-Tone case. Powered by the 4591 caliber with 35j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-9d1ecc18108a]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1971

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