Seiko Cal. 6651 - 551

The Seiko 6651-551 represents an important milestone in Seiko's 1968 lineup. With its 20mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-f70409d88239]

Also known as: Helmet, Rally

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1968

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