Seiko Cal. 0731 - 851

Released in 1966, the Cal. 0731 with design code 851 was part of Seiko's domestic market collection. It features a White dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-eb32bedb411c]

Also known as: World Timer, Flighty

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1966

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