Seiko Cal. 6399 - 740

Seiko 6399-740

The 6399-740 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6399 caliber with 18j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-4deea1d76632]

Also known as: Rally, World Timer

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
40mm
Case Thickness
11.1mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Burgundy
Jewels
18j
Frequency
21,600 bph
Power Reserve
46 hours
Year
1980

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