Compatibility summary
You will need a travel adapter in Saint Vincent and the Grenadines; plug types used there differ from Brazil. Voltage differs by more than 20% — a voltage converter may be needed for some appliances.
Plug comparison
Brazil plug types: C N
Saint Vincent and the Grenadines plug types: A B G
There is no common plug type between Brazil (C N) and Saint Vincent and the Grenadines (A B G). You need a travel adapter.
Voltage comparison
Brazil: 127V, 60Hz
Saint Vincent and the Grenadines: 230V, 50Hz
Voltage converter recommended (Brazil 127V vs Saint Vincent and the Grenadines 230V).