Seiko Cal. 6610 - 591

The 6610-591 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6610 caliber with 33j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-0506d67033ad]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1999

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