Seiko Cal. 5635 - 431

The 5635-431 is a sought-after Quartz piece from Seiko's golden era. It features a Green dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-987829ae2ddc]

Also known as: Helmet, Flighty

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1984

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