Seiko Cal. 6658 - 741

This Spring Drive model from 1969 features a 46mm Hardlex-Coated Steel case. It features a Green dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-a17d97f37e9f]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1969

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