Seiko Cal. 5615 - 397

Seiko 5615-397

The 5615-397 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-639cb8854962]

Also known as: Helmet, UFO

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
45mm
Case Thickness
9.5mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
80m
Dial Color
Black
Jewels
24j
Frequency
28,800 bph
Power Reserve
67 hours
Year
1971

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