Seiko Cal. 5665 - 821

The Seiko 5665-821 represents an important milestone in Seiko's 1970 lineup. Powered by the 5665 caliber with 21j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-33a7af1af0d3]

Also known as: World Timer

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1970

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