Seiko Cal. 6690 - 852

The Seiko 6690-852 represents an important milestone in Seiko's 1991 lineup. Powered by the 6690 caliber with 17j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-cb8c3240b1c2]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

17j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1991

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