Seiko Cal. 6649 - 184

The Seiko 6649-184 represents an important milestone in Seiko's 1972 lineup. The Bidirectional bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-c3be300aded8]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

35j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1972

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