Seiko Cal. 6616 - 923

The 6616-923 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-12d79ed49d87]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1974

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