Seiko Cal. 6642 - 727

The Seiko 6642-727 represents an important milestone in Seiko's 1973 lineup. Powered by the 6642 caliber with 24j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-81d441cb002e]

Also known as: Sea Horse

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1973

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