Seiko Cal. 6690 - 755

This Hand-Winding model from 1991 features a 34mm Hardlex-Coated Steel case. Powered by the 6690 caliber with 31j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-e9b9eb42012a]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1991

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