diff --git a/src/components/NetworkSwitcher.test.tsx b/src/components/NetworkSwitcher.test.tsx
index 0030952..20cb899 100644
--- a/src/components/NetworkSwitcher.test.tsx
+++ b/src/components/NetworkSwitcher.test.tsx
@@ -257,6 +257,21 @@ describe("NetworkSwitcher", () => {
       fireEvent.keyDown(document, { key: "n", code: "KeyN", altKey: true });
       expect(screen.queryByText("Select Network")).not.toBeInTheDocument();
     });
+
+    it("advertises the Alt+N shortcut in the trigger's tooltip text", () => {
+      vi.mocked(useSorokit).mockReturnValue({
+        network: { name: "mainnet" },
+        initialNetwork: { name: "mainnet" },
+        switchNetwork: switchNetwork,
+        customNetworks: [],
+      } as unknown as ReturnType<typeof useSorokit>);
+
+      render(<NetworkSwitcher />);
+
+      expect(
+        screen.getByText(/Press Alt\+N to switch networks/i),
+      ).toBeInTheDocument();
+    });
   });
 
   describe("client/network mismatch warning", () => {
diff --git a/src/components/NetworkSwitcher.tsx b/src/components/NetworkSwitcher.tsx
index b843ab6..4613a3a 100644
--- a/src/components/NetworkSwitcher.tsx
+++ b/src/components/NetworkSwitcher.tsx
@@ -64,7 +64,16 @@ export const STANDARD_NETWORKS: NetworkPreset[] = [
   },
 ];
 
-/** Keyboard shortcut that toggles the network picker from anywhere. */
+/**
+ * Keyboard shortcut that toggles the network picker from anywhere in the
+ * application. The shortcut is wired to a `keydown` listener in
+ * `NetworkSwitcher` and is also advertised via the trigger button's
+ * `aria-keyshortcuts` attribute for assistive technologies.
+ *
+ * The currently selected network is persisted to
+ * `localStorage["sorokit_network"]` by `SorokitProvider.switchNetwork` and
+ * restored on next mount, so the user\u2019s choice survives a page reload.
+ */
 export const NETWORK_SWITCHER_SHORTCUT = "Alt+N";
 
 export function NetworkSwitcher() {