You Do Need power plug adapter while traveling from Afghanistan to Saint Vincent and the Grenadines.

Here is Why You Need An Adapter

The outlet and plug type used in Saint Vincent and the Grenadines are A, B and G and in Afghanistan are C and F. This is how they look like.

Afghanistan

In Afghanistan, outlets of type C and F are in use.

Type C

Type F

Saint Vincent and the Grenadines

In Saint Vincent and the Grenadines, outlets of type A, B and G are in use.

Type A

Type B

Type G