Seiko Cal. 6615 - 733

The Seiko 6615-733 represents an important milestone in Seiko's 1975 lineup. Powered by the 6615 caliber with 33j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-ef476eb07b54]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1975

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