Seiko Cal. 5661 - 636

The 5661-636 is a sought-after Quartz piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-ca9cc041a104]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1968

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