Seiko Cal. 6660 - 378

Seiko 6660-378

The 6660-378 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6660 caliber with 19j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-0e055d4f06fd]

Also known as: Golden Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
38mm
Case Thickness
10.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Cream
Jewels
19j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1973

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