Seiko Cal. 6616 - 399

The Seiko 6616-399 represents an important milestone in Seiko's 1991 lineup. It features a Green dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-af696dda7cb9]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Green

Jewels

33j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1991

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