Seiko Cal. 5691 - 635

The 5691-635 is a sought-after Solar piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-32502b498b78]

Also known as: Bullhead, Arnie

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1967

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