Seiko Cal. 6378 - 528

Seiko 6378-528

The 6378-528 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6378 caliber with 30j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-54ba16bc3e95]

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
43mm
Case Thickness
13.7mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
70m
Dial Color
Black
Jewels
30j
Frequency
28,800 bph
Power Reserve
58 hours
Year
1986

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seikata-wm-54ba16bc3e95