You Do Need power plug adapter while traveling from San Marino to Bermuda.

Here is Why You Need An Adapter

The outlet and plug type used in Bermuda are A and B and in San Marino are C, F and L. This is how they look like.

San Marino

In San Marino, outlets of type C, F and L are in use.

Type C

Type F

Type L

Bermuda

In Bermuda, outlets of type A and B are in use.

Type A

Type B