Seiko Cal. 6615 - 780

The 6615-780 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6615 caliber with 32j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-a9316c258ab0]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1987

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