Seiko Cal. 5677 - 878

The 5677-878 is a sought-after Solar piece from Seiko's golden era. Powered by the 5677 caliber with 36j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-f786af38a12e]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

12.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1980

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