Seiko Cal. 5645 - 578

Seiko 5645-578

The 5645-578 is a sought-after Spring Drive piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-1a49992e9980]

Also known as: Tuna, Arnie

Specifications

Movement
Spring Drive
Case Material
Titanium
Case Width
42mm
Case Thickness
8.3mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
170m
Dial Color
White
Jewels
18j
Frequency
21,600 bph
Power Reserve
61 hours
Year
1996

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