Seiko Cal. 6660 - 387

Seiko 6660-387

The 6660-387 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6660 caliber with 23j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-cdcd2d59ca0f]

Also known as: Helmet

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
10.6mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
190m
Dial Color
Cream
Jewels
23j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1989

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