Seiko Cal. 6657 - 344

The Seiko 6657-344 represents an important milestone in Seiko's 1972 lineup. Powered by the 6657 caliber with 26j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-ec75bf5b7d43]

Also known as: Pogue

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Black

Jewels

26j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1972

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