Seiko Cal. 6657 - 729

The Seiko 6657-729 represents an important milestone in Seiko's 1970 lineup. Powered by the 6657 caliber with 25j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-a6b97bcd9e1a]

Also known as: Samurai, Panda

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1970

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