Seiko Cal. 6658 - 335

This Automatic model from 1972 features a 34mm Hardlex-Coated Steel case. Powered by the 6658 caliber with 35j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-1b77baecd7d2]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1972

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