is it possible to stream music from iTunes on my iMac to a remote bluetooth speaker

This may sound a silly question.

I have a mid 2010 iMac 21.5 and the internal speakers are rubbish.

I have no idea about these technical things but am considering buying a remote bluetooth speaker to enable music inside and out if i need it.

I know these kind of speakers are compatible with my iPhone 4s but cannot find information on whether the iMac is.

Can anybody enlighten me please?

TIA