Seiko Cal. 4568 - 931

The 4568-931 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4568 caliber with 36j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-e019597708a0]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1973

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