Seiko Cal. 6399 - 730

Seiko 6399-730

The Seiko 6399-730 represents an important milestone in Seiko's 1987 lineup. Powered by the 6399 caliber with 20j jewels beating at 21,600 bph, it delivers a 48 hours power reserve. [seikata-wm-f1ea53adcd55]

Also known as: Helmet, Arnie

Specifications

Movement
Quartz
Case Material
Titanium
Case Width
44mm
Case Thickness
11.0mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Navy
Jewels
20j
Frequency
21,600 bph
Power Reserve
48 hours
Year
1987

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