Seiko Cal. 6357 - 970

This Spring Drive model from 1966 features a 37mm PVD Black case. Powered by the 6357 caliber with 31j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-bc172eb657ab]

Also known as: Turtle, Rally

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1966

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