Seiko Cal. 6657 - 632

The Seiko 6657-632 represents an important milestone in Seiko's 1967 lineup. Powered by the 6657 caliber with 25j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-0cbe28a309de]

Also known as: Pogue, Bellmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1967

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