Seiko Cal. 6661 - 825

The 6661-825 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Navy dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-7756595e456d]

Also known as: UFO, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1972

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