Seiko Cal. 6355 - 764

This Spring Drive model from 1974 features a 34mm Two-Tone case. Powered by the 6355 caliber with 26j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-2c44a6de0bfb]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1974

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