Seiko Cal. 0770 - 879

Seiko 0770-879

This Spring Drive model from 1972 features a 40mm Hardlex-Coated Steel case. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-5d5ac34e91ef]

Also known as: Sportsmatic, Arnie

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
10.8mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Green
Jewels
22j
Frequency
28,800 bph
Power Reserve
41 hours
Year
1972

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