Seiko Cal. 0770 - 489

Seiko 0770-489

This Hand-Winding model from 1983 features a 41mm Hardlex-Coated Steel case. Powered by the 0770 caliber with 17j jewels beating at 36,000 bph, it delivers a 71 hours power reserve. [seikata-wm-0fed534a8058]

Also known as: Sumo, Helmet

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
41mm
Case Thickness
8.8mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
130m
Dial Color
White
Jewels
17j
Frequency
36,000 bph
Power Reserve
71 hours
Year
1983

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seikata-wm-0fed534a8058