Seiko Cal. 0731 - 628

The 0731-628 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0731 caliber with 29j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-4ba4da221f9c]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1977

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