Seiko Cal. 0731 - 910

The 0731-910 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 0731 caliber with 28j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-1f8925dd43a2]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

28j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1969

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