Seiko Cal. 5646 - 712

Seiko 5646-712

The 5646-712 is a sought-after Spring Drive piece from Seiko's golden era. It features a Champagne dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-8d548b48bb39]

Also known as: Helmet, Flighty

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
44mm
Case Thickness
8.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
150m
Dial Color
Champagne
Jewels
20j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1975

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