Seiko Cal. 4431 - 647

This Solar model from 1985 features a 46mm Two-Tone case. It features a Navy dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-8d03252e50d5]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1985

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