Seiko Cal. 6657 - 262

This Spring Drive model from 1969 features a 42mm Titanium case. Powered by the 6657 caliber with 27j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-332158f95c53]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

42mm

Case Thickness

14.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1969

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