Seiko Cal. 5663 - 257

This Spring Drive model from 1990 features a 43mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-3ad28723c7fe]

Also known as: UFO, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Green

Jewels

32j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1990

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