Seiko Cal. 4550 - 680

This Hand-Winding model from 1986 features a 37mm Stainless Steel case. It features a Silver dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-a9c223c63ca8]

Also known as: Sumo, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1986

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