Seiko Cal. 5666 - 153

The Seiko 5666-153 represents an important milestone in Seiko's 1971 lineup. Powered by the 5666 caliber with 31j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-084907114835]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1971

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