Seiko Cal. 6615 - 372

The 6615-372 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6615 caliber with 19j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-49028469ee24]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Burgundy

Jewels

19j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1991

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