Seiko Cal. 5650 - 905

The Seiko 5650-905 represents an important milestone in Seiko's 1972 lineup. Powered by the 5650 caliber with 26j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-9049a1743475]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1972

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