Seiko Cal. 6645 - 452

Seiko 6645-452

The 6645-452 is a sought-after Spring Drive piece from Seiko's golden era. It features a Navy dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-62a8d3724808]

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
34mm
Case Thickness
14.4mm
Lug Width
22mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
190m
Dial Color
Navy
Jewels
34j
Frequency
36,000 bph
Power Reserve
40 hours
Year
1968

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