Seiko Cal. 5660 - 488

The Seiko 5660-488 represents an important milestone in Seiko's 1966 lineup. Powered by the 5660 caliber with 29j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-7b94e512ad54]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1966

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