Seiko Cal. 5684 - 634

Seiko 5684-634

The 5684-634 is a sought-after Solar piece from Seiko's golden era. Powered by the 5684 caliber with 31j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-60ceb4322e4b]

Also known as: Turtle, Baby Tuna

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
37mm
Case Thickness
15.9mm
Lug Width
19mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
31j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1977

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