Seiko Cal. 6632 - 728

The 6632-728 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-0ea5178cde3a]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

34j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1977

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