Seiko Cal. 6615 - 598

The Seiko 6615-598 represents an important milestone in Seiko's 1970 lineup. Powered by the 6615 caliber with 28j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-bb2daeeff297]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1970

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