Seiko Cal. 6660 - 312

Seiko 6660-312

The 6660-312 is a sought-after Quartz piece from Seiko's golden era. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-30f9438cb126]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement
Quartz
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
12.8mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
100m
Dial Color
Silver
Jewels
18j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1976

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