Seiko Cal. 6661 - 821

The 6661-821 is a sought-after Automatic piece from Seiko's golden era. It features a Navy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-cadef9793382]

Also known as: Helmet, Emperor

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1967

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