Seiko Cal. 6660 - 457

The 6660-457 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-8eaa8cc9dc86]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1965

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