Seiko Cal. 6680 - 878

This Hand-Winding model from 1977 features a 40mm PVD Black case. It features a Green dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-7d03c996e5e5]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Green

Jewels

17j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1977

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