Seiko Cal. 5677 - 810

Seiko 5677-810

This Hand-Winding model from 1976 features a 42mm Stainless Steel case. Powered by the 5677 caliber with 26j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-16a1bb76652e]

Also known as: Sumo, Helmet

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
42mm
Case Thickness
13.1mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
White
Jewels
26j
Frequency
28,800 bph
Power Reserve
45 hours
Year
1976

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seikata-wm-16a1bb76652e