Seiko Cal. 6660 - 761

The 6660-761 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6660 caliber with 25j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-d7eb8923cbe1]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

15.6mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1998

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