Seiko Cal. 0770 - 643

Seiko 0770-643

The 0770-643 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 200m of water resistance. [seikata-wm-707f1f786ec6]

Also known as: Sportsmatic

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
45mm
Case Thickness
12.6mm
Lug Width
19mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
200m
Dial Color
Black
Jewels
26j
Frequency
36,000 bph
Power Reserve
45 hours
Year
1971

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