Seiko Cal. 6641 - 277

Released in 1972, the Cal. 6641 with design code 277 was part of Seiko's domestic market collection. The Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-6bfa6cb32bda]

Also known as: Helmet, Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

46mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

18j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1972

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