Charles X Gustav granted Frederick William I full souvereignity in the Duchy of Prussia and Ermland (Ermeland, Warmia).
For his Prussian possessions, Frederick William I was elevated from the status of a duke to a princeps summus & Suverenus.
Article III specifies that this applies also to Frederick William I's successors, who likewise would have the status of principes summi & absoluti Suverenii.

Sweden further relinquished her rights to collect custom dues in Prussian ports, in turn, Frederick William I was to satisfy Sweden with 120,000 riksdalers.
A Calvinist himself, he also obliged himself to grant religious freedom to the Lutherans in his Prussian territories, confirming the similar articles IV and XVII of the treaties of Marienburg and Königsberg, respectively.

In addition to these terms, the treaty also included secret articles: therein, Frederick William I accepted Swedish claims to the Baltic coastal areas between Prussia and Swedish Livonia, namely Courland, Lithuania, Samogitia and Semigallia.
Charles X Gustav granted Frederick William I full souvereignity in the Duchy of Prussia and Ermland (Ermeland, Warmia). For his Prussian possessions, Frederick William I was elevated from the status of a duke to a princeps summus & Suverenus. Article III specifies that this applies also to Frederick William I's successors, who likewise would have the status of principes summi & absoluti Suverenii.
Sweden further relinquished her rights to collect custom dues in Prussian ports, in turn, Frederick William I was to satisfy Sweden with 120,000 riksdalers. A Calvinist himself, he also obliged himself to grant religious freedom to the Lutherans in his Prussian territories, confirming the similar articles IV and XVII of the treaties of Marienburg and Königsberg, respectively.
In addition to these terms, the treaty also included secret articles: therein, Frederick William I accepted Swedish claims to the Baltic coastal areas between Prussia and Swedish Livonia, namely Courland, Lithuania, Samogitia and Semigallia.
Treaty of Labiau