Seiko Cal. 0774 - 634

Seiko 0774-634

The 0774-634 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0774 caliber with 25j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-6b623b82d26f]

Also known as: Tuna

Specifications

Movement
Spring Drive
Case Material
Two-Tone
Case Width
37mm
Case Thickness
13.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Burgundy
Jewels
25j
Frequency
28,800 bph
Power Reserve
49 hours
Year
1990

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