Seiko Cal. 6635 - 146

The 6635-146 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-a2ee80d5f167]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1997

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