Throughout the European continent plugs have two round pins and this is no different in Lanzarote. Wherever you holiday in the Canaries, the current used is 220 Volts AC 50Hz.
If you are travelling from the USA bring a voltage converter.
It is always a good idea to buy a plug adapter and bring it along on your holiday, as it comes in very handy. Main sockets require round-pin plugs.
