Seiko Cal. 4447 - 387

This Solar model from 1968 features a 34mm Hardlex-Coated Steel case. It features a Navy dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-590d139a0415]

Also known as: Sumo, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1968

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