Colombia is 110v AC and uses USA style plugs with 2 flat pins, higher rated appliances use USA style 3 pin plugs with two flat pins and one round one.

Most consumer electronics now have variable voltage transformers (e.g. laptops, ipods, mobile phones, camera battery rechargers) so you will only need an adaptor to plug it into the wall.

Appliances using 220-250v such as hairdryers and shavers may well be damaged by using the incorrect voltage.