Seiko Cal. 0731 - 717

This Solar model from 1969 features a 44mm Two-Tone case. It features a Black dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-5ae3a27b52ae]

Also known as: Sumo, Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1969

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