Seiko Cal. 6389 - 904

Seiko 6389-904

The 6389-904 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6389 caliber with 31j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-da704d1a74a2]

Also known as: Tuna

Specifications

Movement
Kinetic
Case Material
Titanium
Case Width
46mm
Case Thickness
12.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
100m
Dial Color
Green
Jewels
31j
Frequency
28,800 bph
Power Reserve
40 hours
Year
1968

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