Seiko Cal. 6660 - 293

The Seiko 6660-293 represents an important milestone in Seiko's 1987 lineup. Powered by the 6660 caliber with 17j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-4aac5576d6d0]

Also known as: Tuna, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1987

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