Seiko Cal. 5660 - 801

The Seiko 5660-801 represents an important milestone in Seiko's 1970 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-02a60691fadc]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1970

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